Eternis S

Eternis S All-In-One Car Seat


Convertible Car Seat


From 4+ lbs up to 65 lbs


From newborn to approx. 4 years or 49 inches

Eternis S Pepper Black Eternis S Manhattan Grey Eternis S Denim Blue Eternis S Lavastone Black Eternis S Denim Blue Eternis S Pepper Black Eternis S Manhattan Grey Eternis S Lavastone Black

Protection that Grows

The new CYBEX Eternis S with SensorSafe is the only seat your child will need from birth and beyond. With three modes -- rear-facing, forward-facing, and booster, this All-In-One Convertible Car Seat is designed for use from birth up to 120 lbs. The Eternis S with SensorSafe integrates important safety technology into the chest clip of the car seat to alert when unsafe situations arise. The alerts are provided through a vehicle receiver and the caregiver’s smartphone. The Eternis S with SensorSafe alerts when the driver accidentally leaves the child behind secured in the car seat, a child unbuckles their chest clip while the vehicle is in motion, the back seat has become too warm or too cold and when a child has been seated for too long —all through a user-friendly app, that also provides guidance on installation, how-to videos, FAQ’s and more.

Additionally, the Eternis S with SensorSafe offers an adjustable Linear Side-impact Protection (L.S.P. System), which absorbs up to 25% more impact forces in the event of a near 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.

Protection that grows with your child – use Rear-facing from 4 lbs. to 50 lbs. Forward-facing from 22 lbs. to 65 lbs. and as a Belt-positioning Booster from 40 lbs. to 120 lbs.

In-seat recline allows your child to safely ride rear-facing for longer

Linear Side Impact Protection System helps absorb up to 25% more impact forces* *when compared to the same car seat without L.S.P. extended

Patented headrest recline helps prevent sleepy heads from falling forward outside of the headrest safety zone

12-position adjustable headrest with integrated no-rethread harness

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