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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)

4.6 4.6 out of 5 stars 415 ratings

Currently unavailable.
We don't know when or if this item will be back in stock.
Brand Cybex
Installation Type Latch
Material Polyester, Alloy Steel, Plastic
Color Lavastone Black
Orientation Convertible Seat

About this item

  • Rear-facing from 4 lbs. to 50 lbs. Forward Facing from 22 lbs. to 65 lbs., Belt-positioning Booster from 40 lbs. to 120 lbs.
  • Adjustable Linear Side-impact Protection (L.S.P. System) absorbs up to 25% more impact forces in the event of a side impact collision*
  • Patented 3-position reclining headrest helps prevent the child's head from falling forward while asleep, keeping the head and neck in a safe position and ensures a comfortable sleeping position
  • 12-position, height-adjustable headrest with an integrated no-rethread harness for protection that grows with your child
  • 6-position one-hand adjustable recline for the best fit to your car
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What's in the box

  • Newborn Insert, Harness Pads, Padded Buckle, Dishwashersafe Cup holder

  • From the manufacturer

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    Product Description

    The new CYBEX Eternis S All-In-One Car Seat is the only seat your child will need from birth and beyond. With three modes - rear-facing, forward-facing and booster, the Eternis S is designed for use from birth up to 120 lbs. The Eternis S offers an adjustable Linear Side-impact Protection (L.S.P. System), which absorbs up to 25% more impact forces in the event of a side impact collision* and a patented 3-position reclining headrest, which helps prevent the child's head from falling forward while asleep, guiding the head and neck into a safe position. These features, combined with a steel reinforced frame for strength and durability provide advanced child safety protection and peace of mind. *when compared to the same car seat without L.S.P. extended

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    Technical Details

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    Warranty & Support

    Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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    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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    This Item
    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)
    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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    PriceCurrently unavailable.-28% $279.99
    List:$389.99
    -20% $239.99
    List:$299.99
    -17% $289.00
    List:$349.99
    -20% $159.99
    List:$199.99
    $119.00
    Delivery
    Get it as soon as Friday, Jan 10
    Get it as soon as Monday, Jan 20
    Get it Jan 7 - 8
    Get it as soon as Friday, Jan 10
    Get it as soon as Friday, Jan 10
    Customer Ratings
    Sold By
    material
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    rear-facing min. weight
    max rear facing weight
    max forward facing weight
    min forward facing weight
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    installation

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    Customer reviews

    4.6 out of 5 stars
    415 global ratings

    Review this product

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    Customers say

    Customers appreciate the infant toddler car seat for its premium appearance, quality build, and comfort. They find it secure and well-protected from impact, with great crash test ratings. Many customers consider it a good value for money. However, some have issues with tightening the straps. There are mixed opinions on installation and size.

    AI-generated from the text of customer reviews

    18 customers mention "Looks"18 positive0 negative

    Customers like the infant toddler car seat's appearance. They say it looks premium and is safe.

    "...6 months (he's a big baby) he made the 20 lb mark and this carseat was perfect. Lots of room to grow but secure and a decent size." Read more

    "...This seat did an amazing job and I am forever greatful for this company and how much thought went into safety features! Amazing car seat!..." Read more

    "...It’s lovely, but buyer beware of how large it is and how difficult the rear facing installation is." Read more

    "...the safety indicated..solid, well padded, easy to adjust recline, sleek looking." Read more

    13 customers mention "Build quality"13 positive0 negative

    Customers like the build quality of the infant toddler car seat. They mention it has a good build, easy install, and great crash test ratings. The belt is tight and secure, but the lock off feature is problematic.

    "...Lots of room to grow but secure and a decent size." Read more

    "...With the seat belt, it’s super tight and secure but the lock off feature is almost impossible to engage unless your husband manhandles it, and even..." Read more

    "...Worth the money for the amount of time you'll have it. Quality is great again worht the money." Read more

    "...It is the best seat in my opinion. It has great crash test ratings, and I feel safe with all of our cybex products...." Read more

    12 customers mention "Comfort"12 positive0 negative

    Customers like the comfort of the infant toddler car seat. They say it's very comfortable and easy to get their child in, and that their grandson seems to love riding in it. The seat belt is tight and secure, but the lock off is useful.

    "...It keeps my baby comfortable and safe. Plus it was so easy to install. I ordered a second one for my husband's truck." Read more

    "...With the seat belt, it’s super tight and secure but the lock off feature is almost impossible to engage unless your husband manhandles it, and even..." Read more

    "...Other than that, I absolutely love it. It’s not too wide. It’s very comfortable and cushioned. The winning feature for me is the reclining headrest...." Read more

    "...they are perfect since I'm a baby wearing mom and they are comfortable for my girls and grow with them...." Read more

    11 customers mention "Safety features"11 positive0 negative

    Customers appreciate the car seat's safety features. They mention it protects their children from impact, is easy to install, and keeps their children from getting injuries.

    "...It keeps my baby comfortable and safe. Plus it was so easy to install. I ordered a second one for my husband's truck." Read more

    "...The seat did everything it was supposed to! It protected him from impact, we did have the sides bumped out as he was behind the drivers seat at the..." Read more

    "I loved the safety features and all the extra padding, etc. Plus Amazon had it on sale...." Read more

    "...little one is extremely comfortable for long periods of time as well as safe! Highly recommend!" Read more

    7 customers mention "Value for money"7 positive0 negative

    Customers appreciate the infant toddler car seat's value for money. They say it's an amazing deal and a great product that saves them money.

    "...Worth the money for the amount of time you'll have it. Quality is great again worht the money." Read more

    "Comfort car seat My kids love Price is very good for this product" Read more

    "...This price is a steal!" Read more

    "Love the product saved a lot of money on it and thank you so much" Read more

    18 customers mention "Ease of installation"10 positive8 negative

    Customers have different experiences with the infant toddler car seat installation. Some find it easy to install and use, while others say it's difficult to install, not user-friendly, and incompatible with seatbelt installation. The manual and customer service are also criticized.

    "...It keeps my baby comfortable and safe. Plus it was so easy to install. I ordered a second one for my husband's truck." Read more

    "...’s lovely, but buyer beware of how large it is and how difficult the rear facing installation is." Read more

    "...No. But should a car seat really be super easy to install? I don’t think so. My son in law and I installed this in 15 minutes...." Read more

    "...The only issue I have is that the instillation was difficult. I am certified in car seat instillation and this one was tricky for even me...." Read more

    10 customers mention "Size"4 positive6 negative

    Customers have different views on the size of the infant toddler car seat. Some find it a decent size, adjustable to any size and age, and not too wide. Others say it's too big, would not fit in the middle, and is very wide.

    "...to take our son home from the hospital in this carseat, but it was WAY too big...." Read more

    "...Other than that, I absolutely love it. It’s not too wide. It’s very comfortable and cushioned. The winning feature for me is the reclining headrest...." Read more

    "...It would not fit in the middle, and the passenger side worked, but the front passenger seat had to be moved so far up, my husband couldn’t get..." Read more

    "...Other than that we love it. Soft padding and adjustable to any size and age." Read more

    8 customers mention "Strap tightening"0 positive8 negative

    Customers find the strap tightening difficult. They mention that the latch belts don't tighten enough to secure the car seat, and the anchors never tighten down to where they feel safe. The latch anchors don't easily release when there is tension on the belt, making it difficult to press and maneuver the bottom in and out.

    "...The anchors would never tighten down to where I felt they were safe...." Read more

    "...It's very difficult to pull and tighten on him. It seems like it's just getting harder and harder by the day...." Read more

    "...Could not get the seat tightened as needed. Ended up using the car belt also. The adjustable headrest/tilt option is a great feature...." Read more

    "...Not to mention the LATCH straps loosening is a hazard for my baby. I'll probably return it and get a different, easier to use and safer seat." Read more

    very good
    5 out of 5 stars
    very good
    I am very satisfied with this car seat, I have been using it for over a year) The fabric is good, after the child eats, the stains wash off very easily
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    Top reviews from the United States

    • Reviewed in the United States on May 19, 2023
      I ordered one carpet initially because I was worried it would be poorly made due to the great price, but it's very nice. It keeps my baby comfortable and safe. Plus it was so easy to install. I ordered a second one for my husband's truck.
      One person found this helpful
      Report
    • Reviewed in the United States on October 19, 2024
      We tried to take our son home from the hospital in this carseat, but it was WAY too big. Once he hit about 6 months (he's a big baby) he made the 20 lb mark and this carseat was perfect. Lots of room to grow but secure and a decent size.
    • Reviewed in the United States on June 25, 2022
      This car seat keeps my son from getting any injury’s in our car accident this week. We were hit by a Ford F-150 that was traveling 45 MPH as we were taking off from a stop at a 4 way stop. He ran the stop sign and totaled my 2011 Ford Focus. My son, 1 year old, was the only one not injured in my car. The seat did everything it was supposed to! It protected him from impact, we did have the sides bumped out as he was behind the drivers seat at the time of the accident. This seat did an amazing job and I am forever greatful for this company and how much thought went into safety features! Amazing car seat! I’ve attached an image of my son buckled into the seat and then 1 image on my car and an image that shows the truck that hit us along with my car. I give this car seat all the credit as to why my son wasn’t injured!
      Customer image
      5.0 out of 5 stars Would 100% recommend this for safety alone!
      Reviewed in the United States on June 25, 2022
      This car seat keeps my son from getting any injury’s in our car accident this week. We were hit by a Ford F-150 that was traveling 45 MPH as we were taking off from a stop at a 4 way stop. He ran the stop sign and totaled my 2011 Ford Focus. My son, 1 year old, was the only one not injured in my car. The seat did everything it was supposed to! It protected him from impact, we did have the sides bumped out as he was behind the drivers seat at the time of the accident. This seat did an amazing job and I am forever greatful for this company and how much thought went into safety features! Amazing car seat! I’ve attached an image of my son buckled into the seat and then 1 image on my car and an image that shows the truck that hit us along with my car. I give this car seat all the credit as to why my son wasn’t injured!
      Images in this review
      Customer image Customer image Customer image
      Customer imageCustomer imageCustomer image
      58 people found this helpful
      Report
    • Reviewed in the United States on December 12, 2024
      I am very satisfied with this car seat, I have been using it for over a year) The fabric is good, after the child eats, the stains wash off very easily
      Customer image
      5.0 out of 5 stars very good
      Reviewed in the United States on December 12, 2024
      I am very satisfied with this car seat, I have been using it for over a year) The fabric is good, after the child eats, the stains wash off very easily
      Images in this review
      Customer image Customer image
      Customer imageCustomer image
    • Reviewed in the United States on February 24, 2022
      I loved the safety features and all the extra padding, etc. Plus Amazon had it on sale. It gets here in three days, box was beat to hades, but inside everything was still plastic wrapped, zip tied, etc. It’s so nice. Cadillac nice. Black Lincoln nice. The padding is amazing, you don’t have to re-thread the harness, and the level indicator is a lovely added touch. I especially loved the L.S.P. feature, it just makes me feel better even if it sounds gimmicky.
      However, it’s extremely hard to install. I have a newer Kia Sorento so it’s not the smallest SUV, but you wouldn’t know it putting this thing in.
      The best rear facing level we could get was a 3, (1 is for newborns for reference) and even though my daughter is almost a year, I would have liked to get it to a 2. The anchors would never tighten down to where I felt they were safe. I know you can only use them to 35 lbs, but we couldn’t even use them for a little while. With the seat belt, it’s super tight and secure but the lock off feature is almost impossible to engage unless your husband manhandles it, and even then he could only get it halfway.
      When it’s all said and done, she’s very comfortable and it’s easy getting her in and out of the vehicle. But I dread having to fix it if for whatever reason it gets knocked out of position or must be moved.
      All in all, behind the driver’s seat (I’m 5’6”) was where we got it safely in and leveled properly. It would not fit in the middle, and the passenger side worked, but the front passenger seat had to be moved so far up, my husband couldn’t get in.
      It’s lovely, but buyer beware of how large it is and how difficult the rear facing installation is.
      9 people found this helpful
      Report
    • Reviewed in the United States on January 25, 2023
      I have been using this seat for about 2 weeks now and I love it. The only issue I have is that the instillation was difficult. I am certified in car seat instillation and this one was tricky for even me. It took me longer than it has even taken me to install a car seat. But with patience I finally got it right. I hope to never have to move it. Rule of thumb - the car seat should not move more than an inch side to side. Have someone else take a look if you are having trouble. It’s better to be safe than sorry. Other than that, I absolutely love it. It’s not too wide. It’s very comfortable and cushioned. The winning feature for me is the reclining headrest. It’s like magic. It keeps your little one’s head from falling forward while asleep. I used to drive with one hand while the other was in the backseat holding my son’s head up. No gimmicky pillow or hack worked for us. This feature alone is worth 5 stars.
      Customer image
      5.0 out of 5 stars Not perfect, but 5 stars in my book!
      Reviewed in the United States on January 25, 2023
      I have been using this seat for about 2 weeks now and I love it. The only issue I have is that the instillation was difficult. I am certified in car seat instillation and this one was tricky for even me. It took me longer than it has even taken me to install a car seat. But with patience I finally got it right. I hope to never have to move it. Rule of thumb - the car seat should not move more than an inch side to side. Have someone else take a look if you are having trouble. It’s better to be safe than sorry. Other than that, I absolutely love it. It’s not too wide. It’s very comfortable and cushioned. The winning feature for me is the reclining headrest. It’s like magic. It keeps your little one’s head from falling forward while asleep. I used to drive with one hand while the other was in the backseat holding my son’s head up. No gimmicky pillow or hack worked for us. This feature alone is worth 5 stars.
      Images in this review
      Customer image
      Customer image
      10 people found this helpful
      Report
    • Reviewed in the United States on February 6, 2024
      I have 2 of these for my smaller girls and love them. One is a newborn and one is a toddler and they are perfect since I'm a baby wearing mom and they are comfortable for my girls and grow with them. Worth the money for the amount of time you'll have it. Quality is great again worht the money.
      One person found this helpful
      Report
    • Reviewed in the United States on December 30, 2023
      This is my second purchase of this car seat. It’s great if you need to move it in and out of different cars vs the 360 version which I also have but my little one is extremely comfortable for long periods of time as well as safe! Highly recommend!
      Customer image
      5.0 out of 5 stars Best Car seat!!
      Reviewed in the United States on December 30, 2023
      This is my second purchase of this car seat. It’s great if you need to move it in and out of different cars vs the 360 version which I also have but my little one is extremely comfortable for long periods of time as well as safe! Highly recommend!
      Images in this review
      Customer image Customer image
      Customer imageCustomer image
      2 people found this helpful
      Report

    Top reviews from other countries

    Translate all reviews to English
    • Javi
      5.0 out of 5 stars excelente compra
      Reviewed in Mexico on March 29, 2023
      se siente de muy buena calidad, como punto importante el echo de que permita que la parte superior se incline ligeramente hacia atras es perfecta para el niño, esto le pemirte ir dormido con la cableza ligeramente inclinada hacia atras en vez de que se le caiga hacia delante como le pasa en el resto de sillas que he probado
    • Jorge
      5.0 out of 5 stars Confortable
      Reviewed in Mexico on March 13, 2023
      Fácil de instalar, me gusto la tela y el diseño está práctico para poner el vaso, si se envicia quitarlo y limpiarlo
    • Javier B
      4.0 out of 5 stars Buen producto
      Reviewed in Mexico on November 7, 2019
      Muy buen producto pero no es muy cómodo para colocar al bebé, los cinturones deberían de tener una mejor ubicación y ser más fáciles de asegurar
    • Rosalina
      4.0 out of 5 stars Calidad, comodidad, seguridad y fácil instalación
      Reviewed in Mexico on August 10, 2023
      Hoy la use por primera vez y siento que hice una buena compra, mi bebé se fue tranquilo y comodo. Al principio cuando llegó pense en regresarla por que la fecha de realización de la silla es del 2021 por lo que ya tiene 2 años menos de los 10 años que tiene de vida, pero al final no decidi regresarla por tres cosas.
      1. Espere casi 3 semanas para recibirla desde US y la verdad es que ya nos era necesaria.
      2. Amazon tiene el mejor precio.
      3. Es la silla que más me convenció del mercado y sinceramente puedo decir que no esperaba más, cada detalle me convenció, la calidad de los materiales es excelente.

      Crei que iba a batallar mucho para instalarla, ya que jamás habia instalado alguna, el manual es explicito como los videos que vienen en su pagina oficial.
      Cybex es una marca que ofrece innovación y seguridad, lo digo por que ya es el segundo producto que adquiero de esta marca y sinceramente seguiria comprando.
      En resumen, estamos contentos con la compra.
    • christian reyes
      5.0 out of 5 stars La mejor silla
      Reviewed in Mexico on January 1, 2023
      Excelente calidad y seguridad, es súper cómoda e incluso la estética es maravillosa para cualquier auto
      Me encanto la marca Cybex