Cybex

Cybex Eternis S, All-in-One Convertible Car Seat, Use from Birth to 120 lbs, Reclining 12-Position Height-Adjustable Headrest, Side Impact Protection, Lavastone Black 1 Count (Pack of 1)

$283.48
(4.6) 4.6 stars out of 10 reviews 10 reviews
$283.48
$283.48
Free overnigh delivery
FSA and HSA eligible
Cybex Eternis S, All-in-One Convertible Car Seat, Use from Birth to 120 lbs, Reclining 12-Position Height-Adjustable Headrest, Side Impact Protection, Lavastone Black 1 Count (Pack of 1)

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Customer reviews & ratings

4.6 out of 5stars
(10 reviews)
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Most helpful positive review

5.00 out of 5 stars review
Verified Purchaser
06/23/2021
Very sturdy with great features
I received the CYBEX Eternis S All-In-One Car Seat just in time for a 9 hour family road trip to FL. This was our first long trip with our daughter, who is now 15 months old so I was very interested to see how she would do and if the car seat would be comfortable for her. Thanks to the Stellar Product Testing Panel for providing me with this convertible car seat for my honest opinion. The first thing I noticed was that the car seat was quite heavy! It feels very sturdy, which I find important for safety. The design is sleek and not bulky. It also does not take up as much room from the front seat as expected. The fabric is smooth and the padding seems plush. Installation was more difficult than I anticipated. I installed it rear-facing, in the center seat of the back seat, using the seat/lap belt. It was quite hard to get the seatbelt into the lock off. The instruction manual could be more clear in how to get it in the lock off (how to maneuver the strap/manipulate it). I ended up getting it in after about 20 minutes of using a “flossing” motion. Since we installed ours in the center seat, we didn't need to utilize the Linear Side-Impact Protection, but that feature is pretty cool to have in case we change the position in the car. Extra safety features are a big plus, and this would make me feel much better about a side impact collision using that feature. Once installed, it is very easy to use. I love that the straps are attached to the headrest so they don't have to be rethreaded as she grows. The magnetic holder for the straps is a nice touch for getting baby in and out while keeping the straps out of the way. The reclining headrest is nice for napping - it definitely helped keep my daughter's head from falling forward. She was able to nap her usual 2 hour naps on the road trip both directions so I would say she found it very comfortable! My daughter can't reach the cup holder yet, so it would be nice if it could be moved closer, but it is large enough to accommodate a variety of sized bottles/cups which is great. When the seat is installed rear-facing, I can't seem to reach the recline adjustment since it is located right up against the seat so that's a bummer. I also noticed that the straps go tightly around her thighs vs the waist so I wasn't sure if this would leave imprints/marks on her legs, but it didn't. I'm excited that we can use this car seat for many years to come as it will grow with her. Overall the car seat exceeded expectations and appears to be very comfortable and will keep my little one safe as she grows.
jcocookie

Most helpful negative review

3.00 out of 5 stars review
Verified Purchaser
06/23/2021
Comfortable but bulky
I was excited to try this seat for my almost 4 year old. It was easy to put together and seemed like it would be a great fit. My son loves the cup holder, says it's very comfortable and likes the multi position head rest. Unfortunately it is extremely difficult to get a tight fit in our car when installing with the lower latches. I had to have my husband help tighten it as much as possible and even with it tightened as much as possible I'm not very comfortable with the fit. The shoulder straps also twist very easily, which is kind of a pain. Overall it's an okay car seat and I love the look of it, but due to not being able to install safely very easily I don't think it's the most user friendly. I am looking forward to trying this as a booster when we get to that point though. I was given this convertible car seat to try as part of the Stellar Product Testing Panel.
Ekhumphries
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/28/2021
    Super impressed
    This car seat caught our attention with the beautiful design and fabric, but when we learned that it grows with our child, we were so excited to receive it and get it installed. Being able to use one car seat for 10 years is incredible! It was very easy to install with the latch system and came with clear and simple directions. As a mom of 5, I've tried multiple brands/styles, and I'd have to say that this car seat really impressed me with the safety features. We are in the car often, and the 3-position reclining headrest has been so nice for car naps and being comfortable while preventing my child's head from falling forward while asleep. The quality is very impressive and the steel reinforced frame provide lots of peace of mind while driving. Safety is always my number one priority, with comfort and ease of use tied for second. Both my newborn and my 1 year old have been able to use this car seat, and the ease of adjustment between positions for proper fit plus the quick install reference guide and level indicator on the side car seat has been so convenient for our family that is always on the go! Can't say enough about this car seat, and I'm confident that the quality will last over the next 10 years. I received this amazing convertible car seat from the Stellar Product Testing Panel.
    ChelsMama
  • 4.00 out of 5 stars review
    Verified Purchaser
    06/26/2021
    Great seat but too big
    As much as I would love to give this seat a 5 star review, I just cannot. There are a few things I love about it- the fabric is super easy to clean, lots of cushion for soft baby skin, and very comfy especially with the reclining head rest. The seat is customizable and I love that it lasts 10+ years. The side pop-outs for extra side impact cushion is a great safety feature, and it's easy enough to install as far as car seats go. However, my biggest issue is that although the full seat recline helps it to fit in your car, the seat is almost too tall for our backseat. It butts up against the front seat and barely fits- and we don't have a small car! We have a midsize SUV. But for some reason the shape of our car does not mesh well with this carseat and although we're keeping it in there, it means we can't adjust the front seat back any further for now (even when we play with the different recline positions). As the seat is advertised for being super flexible and fitting in any car I have to take away one star because it just isn't the case for us. Thanks to Stellar Product Testing Panel for sending it to us to try out!
    Seonaid
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/25/2021
    Best Car Seat I Have Ever Seen
    This car seat is hands-down, the best car seat I have ever used with either of my children. This all-in-one car seat is incredibly comfortable and roomy for little ones. My daughter hates riding in the car. She usually gets fussy after about an hour. We took a 7 hour trip this past weekend, and my daughter sat in this car seat for the ride. She lasted 4 hours before we had to stop to take a break! I really think all the padding, space, and ability to recline really helped a lot. It also was such a relief and peace of mind to have all the extra safety features, especially the Linear Side Impact Protection. I will say that this car seat is very large and quite heavy. Personally, I love that about it, because it seems so sturdy and doesn't shift around, but I also drive a large car. For a person that has a tight space and other car seats in their car, this might not fit for you. Overall, this is one of the best car seats that I have ever had or seen. I will not hesitate to recommend this to anyone and everyone. It's a major bonus that you can use it for up to 10 years. My 3 year old has already been fighting to sit in it as well. Special thanks to the Stellar Product Testing Panel for sending me this convertible car seat!
    AdventureMom
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/25/2021
    quality versatile car seat
    The Cybex Eternis S All-In-One car seat is a great car seat! This is our first time using an all-in-one car seat. This seat can be used rear-facing, forward-facing, or as a booster seat depending on your child's weight, height, and age. We tried it with our 18-lb, 26-inch, 6-month-old and he seems happy in it! He was having trouble in his infant seat, possibly because he would get hot and didn't like the angle (we are speculating), so we were eager to try him in a new option. The lower anchor latch release clip is convenient and easy to use compared to other seats we have tried. Installation was complex, but not any more complex than other seats. The height is easy to adjust as the baby grows and the angled headrest will be useful when our child is older. I look forward to trying out the headrest when he's taller. The angle of the seat in the rear-facing position causes it to take up more space than a standard infant seat, so this is something to keep in mind when considering an all-in-one or convertible seat as opposed to an infant seat with a base. You need a spacious backseat for any of these options. Our baby isn't tiny so he doesn't seem to get lost in the seat even though it's big and suitable for a much older kid as well. It's made to fit a newborn as well, but I can't imagine putting a newborn in such a big seat. This seat has a safety feature called “Linear Side-Impact Protection” or LSP, which I had never heard of before. The system is meant to enhance the safety of the seat in the event of a side collision crash. Of course, we have not tested this feature since we haven't been in an accident, but it is nice that it is built-in. The feature has a section that you push and it just pops out so it's incredibly easy to use. My favorite feature of this seat so far is how easily the straps tighten, almost as if they are gliding. Our other convertible seat has straps that are a pain to tighten and loosen. On the Eternis S, the straps easily loosen with the push of a button and pull of the strap. They are also easy to tighten by pulling the strap at the bottom. The idea of this seat lasting 10 years is great, although I have a hard time believing ANY car seat will last that long just due to wear and tear. I do think this seat will hold up well over time. The construction feels sturdy and the fabric feels high quality, but I've also owned other car seats that just get dirty and worn with a couple of years of daily use. Let's be honest, kids and babies are brutal on these types of products! The option of being able to use this seat at multiple stages is great though and for parents who would like to try to use a car seat for a long period, I think this is a great quality option. For us, it is nice that we can use it for our 6-month-old now, but if we decide to move our 5-year-old to a booster, we could potentially switch her to this seat when our 6-month-old is ready for the convertible seat. The versatility is definitely a plus. The appearance of this seat is really nice, too. I did not choose the color since we received this through a panel, but the “Denim Blue” color that we received is a pretty indigo that I would have definitely considered given the choice. It's nice that it's not just black, but it looks modern and sophisticated and nice in the car. Thank you to the Stellar Product Testing Panel for providing me with the Cybex Eternis S All-In-One car seat!
    Miss Y
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/24/2021
    The only car seat you will ever need
    The CYBEX Eternis S All-In-One Car Seat was given to us for free to try out and review from the stellar parent panel. It arrived at the perfect time. Our 5 year old had grown out of her car seat and needed a booster seat and our 9 month old would soon be needing a replacement for her infant car seat. Since the booster we had ordered our 5 year old was delayed in shipping we decided to use the CYBEX Eternis S All-In-One Car Seat as her booster seat for our upcoming three hour road trip. It was PERFECT! Our daughter complains about being uncomfortable during road trips but loved this seat. Never complained and napped comfortably. The headrest tilts forward and back which made it easy for her to nap during the drive. Converting it to a booster was super easy. We love that she's so comfortable and that we know that she's safe and secure in there. The side impact safety is a feature I haven't seen on other booster seats. The fact that this car seat works from infancy to year 10 is amazing!! Really wish we would have had this car seat sooner. It's comfortable, stylish, and safe. The fabric is soft and doesn't get too warm. Living in Houston that is a big plus! I can't recommend this car seat more. Saves you money and the trouble of having to replace car seats to accommodate your growing kiddo.
    MamaRey
  • 3.00 out of 5 stars review
    Verified Purchaser
    06/23/2021
    Comfortable but bulky
    I was excited to try this seat for my almost 4 year old. It was easy to put together and seemed like it would be a great fit. My son loves the cup holder, says it's very comfortable and likes the multi position head rest. Unfortunately it is extremely difficult to get a tight fit in our car when installing with the lower latches. I had to have my husband help tighten it as much as possible and even with it tightened as much as possible I'm not very comfortable with the fit. The shoulder straps also twist very easily, which is kind of a pain. Overall it's an okay car seat and I love the look of it, but due to not being able to install safely very easily I don't think it's the most user friendly. I am looking forward to trying this as a booster when we get to that point though. I was given this convertible car seat to try as part of the Stellar Product Testing Panel.
    Ekhumphries
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/23/2021
    This car seat is the only one you need
    Thanks to the Stellar Product Testing Panel for providing me with this convertible car seat. I was most impressed with the longevity of the CYBEX Eternis S and it's ability to transform for all the stages of a child's growth with the latest innovation in safety features. My daughter is 2 months old and is currently using this car seat in the rear facing position with the newborn insert. It's easy to strap her in and she loves the comfort of this seat with the reclining options. It feels completely secure and safe around her, giving me peace of mind. As a mom, I especially love the smart features of the seat which ping me if the car is getting too hot or if she's been in the seat for an extended period of time. I think this seat will be even more valuable as she grows with features that alert me if she tries to unbuckle her belt. Overall seat has a sleek design and it is both very heavy and feels extremely secure. This is definitely a seat that will remain in my car now that it is installed vs a light weight car seat carrier that can be affixed to a stroller. I think the value here is really that it can be used for an infant, a toddler and a young child all the way up to 120lbs so once you purchase you are covered for life.
    Brooke
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/23/2021
    An awesome car seat
    The Cybex Eternis S is the only convertible car seat you will need for your child from 4lbs to 120lbs! It has a unique 3 positioning reclining headrest that made it easy for my daughter to put her head back when she wanted to rest. It prevents that child head forward tilt when they sleep. We enjoy how comfy and luxurious the seat is, it's so thick and squishy! My daughter immediately loved sitting in her seat and enjoyed having her sippy cup in the removable cup holder! The cool side impact protection system, shown in picture two, is also really neat because you push the button when you need it or put it back in if your seat is not next to a window. Other neat features include an adjustable 12-position headrest that moves up and down to size your child. A no-rethread harness, 6-position recline, as well as an in-seat recline feature which allows for extra legroom (and extended rear-facing to 50lbs!) without cramping the front seat! The magnetic clip connector is so helpful to have with a fussy child! There are so many reasons why you need to consider this car seat for your baby or older kid! It really is as great as it sounds! I received this product as apart of Stellar Product Testing to give my honest feedback!
    pureCheri
  • 5.00 out of 5 stars review
    Verified Purchaser
    06/23/2021
    Very sturdy with great features
    I received the CYBEX Eternis S All-In-One Car Seat just in time for a 9 hour family road trip to FL. This was our first long trip with our daughter, who is now 15 months old so I was very interested to see how she would do and if the car seat would be comfortable for her. Thanks to the Stellar Product Testing Panel for providing me with this convertible car seat for my honest opinion. The first thing I noticed was that the car seat was quite heavy! It feels very sturdy, which I find important for safety. The design is sleek and not bulky. It also does not take up as much room from the front seat as expected. The fabric is smooth and the padding seems plush. Installation was more difficult than I anticipated. I installed it rear-facing, in the center seat of the back seat, using the seat/lap belt. It was quite hard to get the seatbelt into the lock off. The instruction manual could be more clear in how to get it in the lock off (how to maneuver the strap/manipulate it). I ended up getting it in after about 20 minutes of using a “flossing” motion. Since we installed ours in the center seat, we didn't need to utilize the Linear Side-Impact Protection, but that feature is pretty cool to have in case we change the position in the car. Extra safety features are a big plus, and this would make me feel much better about a side impact collision using that feature. Once installed, it is very easy to use. I love that the straps are attached to the headrest so they don't have to be rethreaded as she grows. The magnetic holder for the straps is a nice touch for getting baby in and out while keeping the straps out of the way. The reclining headrest is nice for napping - it definitely helped keep my daughter's head from falling forward. She was able to nap her usual 2 hour naps on the road trip both directions so I would say she found it very comfortable! My daughter can't reach the cup holder yet, so it would be nice if it could be moved closer, but it is large enough to accommodate a variety of sized bottles/cups which is great. When the seat is installed rear-facing, I can't seem to reach the recline adjustment since it is located right up against the seat so that's a bummer. I also noticed that the straps go tightly around her thighs vs the waist so I wasn't sure if this would leave imprints/marks on her legs, but it didn't. I'm excited that we can use this car seat for many years to come as it will grow with her. Overall the car seat exceeded expectations and appears to be very comfortable and will keep my little one safe as she grows.
    jcocookie
  • 4.00 out of 5 stars review
    Verified Purchaser
    01/09/2019
    Great car seat that may work well from birth!
    I was a certified Child Passenger Safety technician several years ago (I have since let my certification lapse) and have installed many different car seats in many different types of vehicles. I have only tried the Eternis S in my vehicle (Toyota Prius V) for my baby (almost 11 months ~18 lbs. and 27" tall). I installed the car seat in our car in the most upright position allowed for rear facing, using the leveling indicator ball, this is the only rear facing position that will allow an adult to ride in the front passenger seat (the car seat takes up this same amount of space all the way to the top harness position). She needs the Eternis headrest high enough that I was able to tilt it back a notch (only headrest positions 4 and higher allow you to tilt the headrest back) which was very nice, she fell asleep and her head did not slump at all. I installed the Sensorsafe app on my iPhone to try it out. It works well and the setup instructions within the app were easy to follow. I highly recommend the using the seat belt to install this car seat, it was much easier for me to get a tight install with the seat belt than with LATCH. I installed the car seat in my car with the seat belt both rear and forward facing. I was able to get a solid install by just feeding the seat belt through the generously sized belt paths (no scratched hands!), feeding the shoulder belt through the the lock off, and pulling the seat belt with just my hands. I did not have to put my weight in the car seat to get it tight. I installed the car seat in my car with LATCH both rear and forward facing. The LATCH strap is stored inside a compartment under the seat cover, it is a little bit of a pain to get it out, feed it through the belt path, and replace the seat cover. I really like the pull strap release on the LATCH buckle, it is easier than the push button style. I was able to get tight rear and forward facing installs, but I had to put one knee in the seat and pull the LATCH strap as hard as possible while rocking the seat side to side to get it tight. According to the user manual you must discontinue using LATCH rear facing when baby weighs 35 lbs. and forward facing at 40 lbs. With the infant insert installed, the shoulder straps are 6 ½" high in the lowest setting and the crotch strap in the inner position is 3" from the seat back. With the infant insert removed, the shoulder straps are 17 ½" high in the highest setting and the crotch strap in the outer position is 5 ¾" from the seat back. Pros: -Looks like it will work well for a small newborn (deep recline, head rest tilts back automatically in the smaller harness settings, smallest harness setting looks small enough) -Optional tilt back headrest for the higher harness settings -High rear facing capacity, 4-50 lbs. and 17"-48" -High forward facing harnessed capacity, 22-65 lbs. and 28"-49" -Booster mode, 40-120 lbs. and 44"-57" -The harness does not have to be removed for booster mode (less likely to lose the parts) -LATCH, including top tether, can be used to secure the car seat in the vehicle in booster mode -Seems well cushioned and comfortable for babies and toddlers -Large belt paths that don't scratch your hand when feeding the seatbelt through -10 year expiration date -Retractable L.S.P. only takes up extra width in your car when extended for use -LATCH strap pull release mechanism is easy to use -Clear, easy to follow user manual and stickers on the car seat Cons: -Very large seat - 19 ½" wide and takes up a lot of room rear facing front to back if reclined for a small baby, you would need a very large vehicle to be able to recline it deeply enough for a newborn -Difficult to get a tight LATCH installation -The seat bottom is very well padded except for the 3" near the seat back which is about half as padded as the rest of of the seat bottom, it seems like this would be uncomfortable for a potty trained child -The chest clip is stiff to buckle and unbuckle, this may get better with use -The headrest is difficult to adjust into the lower harness positions (positions 1-2), I was afraid I was going to break it while pushing it down, this may get easier with use I recommend this car seat, I will still use an infant car seat, Cybex Aton Q, for my next newborn (due in June) because we will not be able to recline the Eternis S enough in our car, but I think this will be an excellent car seat once the baby has enough head control to sit in the most upright rear facing position through to the booster years. I received this car seat for free in exchange for my honest review.
    Kidstuff15
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