SKU: 21485057405
cybex all in one

cybex all in one CYBEX Eternis S SensorSafe All-in-One Convertible Car Seat

Sale price$25.91 Regular price$28.79
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

cybex all in one CYBEX Eternis S SensorSafe All-in-One Convertible Car SeatThe CYBEX Eternis S with SensorSafe is the only car seat your child will need from their first ride home through every carpool adventure. With its three adaptable modesrear facing, forward facing, and boosterthe Eternis S is designed to protect children from birth up to 120 lbs. Built with CYBEXs signature safety features and thoughtful design, it ensures unparalleled comfort and security for your little one at every stage. From its advanced Linear

The CYBEX Eternis S with SensorSafe is the only car seat your child will need from their first ride home through every carpool adventure. With its three adaptable modes—rear-facing, forward-facing, and booster—the Eternis S is designed to protect children from birth up to 120 lbs. Built with CYBEX’s signature safety features and thoughtful design, it ensures unparalleled comfort and security for your little one at every stage. From its advanced Linear Side-impact Protection (L.S.P.) to the intuitive SensorSafe™ technology that monitors your child’s well-being, this car seat provides peace of mind wherever the road takes you.

What Is SensorSafe? Keeping Your Child’s Safety Front and Center

Equipped with SensorSafe™ technology, the CYBEX Eternis S delivers real-time safety alerts directly to your phone via the SensorSafe app. This innovative chest clip tracks critical safety indicators, such as unbuckling, temperature, and even periods of inactivity, helping you ensure your child’s safety without taking your eyes off the road.

Cybex Eternis S SensorSafe All-In-One Convertible Car Seat Features

3-in-1 Versatility: Switch between rear-facing (4-50 lbs.), forward-facing (22-65 lbs.), and booster (40-120 lbs.) modes to accommodate your child’s growth.
SensorSafe Technology: Safety alerts for peace of mind, including temperature and child unbuckling notifications.
Linear Side-Impact Protection (L.S.P.): Absorbs up to 25% more impact forces in a near side-impact crash.
12-Position Height-Adjustable Headrest: Grows with your child, making adjustments easy with no need to rethread the harness.
Internationally Patented 3-Position Reclining Headrest: Keeps your child’s head in a safe, comfortable position, reducing the risk of forward head slump.
In-Seat Recline and 6-Position Seat Recline: Designed for ergonomic support and extra legroom in the rear-facing position.
Magnetic Buckle Holders: Allows for easy seat entry and exit without searching for the buckle.

Cybex Eternis S SensorSafe All-in-One Convertible Car Seat Weight and Height Limits: How Long Can You Use Cybex Eternis?

Designed to grow with your child, the Eternis S supports rear-facing up to 50 lbs. or until your child reaches 48 inches, forward-facing up to 65 lbs., and then transitions to a high-back booster for children up to 120 lbs. This extended lifespan means your child can enjoy the safety and comfort of the Eternis S for up to 10 years.

Is CYBEX Eternis FAA Approved?

Yes, the CYBEX Eternis S is FAA-approved for air travel, ensuring your child’s safety in-flight. The FAA recommends securing children in an approved child restraint during flights for additional safety during unexpected turbulence. As always, please confirm with your airline before departure and refer to the car seat’s manual for aircraft installation instructions.

Cybex Eternis S SensorSafe All-In-One Convertible Car Seat Manual and Instructions for Installation

Installing the Eternis S is straightforward with CYBEX’s clear, detailed instructions, and it offers LATCH compatibility for secure installation. For a perfect fit and peace of mind, refer to the user manual for guidance on latch, tether, harness, and recline limitations for each mode.

Cybex Eternis S SensorSafe All-in-One Convertible Car Seat Reviews: Why Parents Love It

The CYBEX Eternis S with SensorSafe has received high praise from parents and caregivers who appreciate its seamless blend of safety, comfort, and durability. Many users highlight the SensorSafe technology, noting that it provides an added layer of security, especially for longer drives or busy days. Parents also love the versatile design, allowing them to use one seat for all stages of their child’s growth—from birth up to 10 years. The seat’s sturdy steel-reinforced frame and the unique L.S.P. system are often mentioned in reviews as standout safety features that make parents feel confident in their choice.

Another common highlight is the ease of use. Parents appreciate the adjustable headrest, easy recline options, and magnetic buckle holders, which simplify getting children in and out. Overall, the Eternis S offers long-term value and trusted safety, making it an exceptional investment in your child’s travel safety.

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Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 21485057405

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Reviewed in the United States on May 26, 2026
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mo
Alexandria, US
★★★★★ 5
Love this for my face!
Neutrogena SPF 100 sunblock lotion is the only sunscreen I trust and use on my face. It gives amazing protection without making my skin feel greasy or heavy. I’ve tried so many different sunscreens, and this one works the best for me. It absorbs nicely, doesn’t leave a bad white cast, and wears well under makeup too. A little goes a long way, and I love knowing my skin is protected, especially during summer or long days outside. Definitely a staple in my skincare routine!
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Reviewed in the United States on May 11, 2026
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Elisa
Pawtucket, US
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Good sunscreen but be careful around your eyes
I’m trying to get better at using sunscreen more consistently, so I’ve been on the hunt for a while for the perfect formula (ideally SPF 100, not greasy, and would work well under makeup for when I’m both outdoors and wearing a full beat). I liked that this seemed to tick off all my boxes while also being affordable because if I’m going to use it frequently, I want to rest easy knowing that it won’t break the bank. I also vaguely remember using this sunscreen (or at least this brand) many years ago with no issues, so figured it’d be worth going back to. I normally use three thick finger lines of sunscreen for my face, neck, and ears, regardless of spf number, because if I’m going to go outside I’m not taking any risks. (Usually the rule of thumb is two fingers.) Also depending on what I’m doing and how long I plan on being outside, I try to also take the bottle with me so I can reapply. Anyway, I test it out, wear it, feels good. Takes a little while for it to feel relatively dry as advertised, but once it dries it’s tolerable. By the end of the day you might forget you still have it on your skin (aside from maybe the slight sunscreen smell, nothing terrible). Washed it off in the shower as usual. Most of my face still looks perfectly fine, but my undereyes are now red! (Or at least one of them, for some reason my right undereye is more sensitive than the left.) From what I’ve read online so far, it might be a sensitivity to avobenzone, one of the active ingredients. Very baffled with what to do because everyone says to use sunscreen around your eyes because of aging and sunburn, but does that mean I have to get used to my eyes turning red just to get that protection? I already wear pretty big sunglasses too, so it’s not like they’re completely exposed. Will have to experiment some more and/or look at alternatives.
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