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Cybex Eternis S Car Seat with SensorSafe

by Cybex

Availability: In stock

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Forward-facing (Fully upright) H 25.5” x W 20” x D 25.3” Weight: 26 lbs.
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We're excited about this all-in-one convertible car seat from Cybex! The Cybex Eternis S Car Seat with SensorSafe technology transforms from infant car seat to booster and grows with your child through every stage between! With its three modes and adjustable headrest and recline, it keeps your child safe and comfortable from birth up to 120 pounds - As long as your child will likely need it.

It's hard to pick our favorite thing about the Cybex Eternis S Car Seat with SensorSafe. We love its long useful life span, making it a smart investment, but Cybex's SensorSafe technology is a huge plus, too. The seat's chest clip transmits information through your car's receiver and your cellphone to alert you to all kinds of potential dangers to your littlest passenger: If the child is left secured in the car when you've gotten out, if they unbuckle the chest clip while the car is in motion, if it's too hot or too cold, and if they've been sitting for too long and need to stretch. 

Linear Side-impact Protection absorbs up to 25% more impact forces in a side impact collision (compared to the same seat without LSP protection). Three recline positions and twelve height positions keep your child's head exactly where it needs to be for optimal safety and comfort. A steel-reinforced shell provides strength, durability, and even more protection for your child.

Modern design, a long useful life, solid construction, a long list of safety features, and SensorSafe technology make the Cybex Eternis S Car Seat with SensorSafe an obvious choice for keeping your child safe and comfortable on travels for years to come.

For more details on SensorSafe technology, check out our blog post!

What's Included:

  • Cybex Eternis S Car Seat with SensorSafe Technology
  • Removable Newborn Inlay
  • Cup holder


  • Use rear-facing from birth (about 4 pounds) to 50 pounds
  • Use forward-facing from 22-65 pounds
  • Use as belt-positioning Booster from 40-120 pounds


  • 5-point safety harness with SensorSafe Technology integrated in the chest clip (not used in Booster mode)
  • Adjustable Linear Side-impact Protection (LSP System) absorbs up to 25% more impact forces in the event of a near 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
  • In-seat recline provides correct ergonomic positioning and extra legroom, allowing your child to safely ride rear-facing longer
  • 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
  • Magnetic buckle holders for easy entry and exit from the seat
  • Removable newborn inlay provides additional support for very small babies (4-11 pounds)
  • Removable cup holder can be positioned on either side and is dishwasher safe for easy clean up
  • Cozy harness pads and 2-position padded buckle for comfort
  • Steel reinforced frame provides strength and durability
  • Energy-absorbing shell and base help reduce the forces felt by the child in a collision
  • Dual belt adjusters to ensure a tight fit while dual level indicators to help ensure the proper angle
  • Innovative one-pull LATCH removal system
  • LATCH Connection storage provided under the seat when not in use
  • Ergonomic design in Cybex's iconic Gold Design language
  • Designed and engineered in Germany
  • Fully upright, forward-facing dimensions: 20"W x 25.5"H x 25.3"D, weighs 26 pounds

Available in: Denim Blue, Lavastone Black, Manhattan Grey, Pepper Black

Additional Information

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