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Safety 1ˢᵗ onBoard 35 LT Infant Car Seat, Monument

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Provide your baby with a superior fit for superior safety while traveling with the onBoard™35 LT infant car seat. The 4 harness heights are spaced right to give your child a better fit all the way from 4-35 pounds. The buckle adjusts in two ways so that you can customize not only the length, but also the buckle’s position on your child. Smaller babies get the extra support they need with head and body inserts that can be removed as they grow. The seat has also been designed for a better reclined body position to give your baby a safer ride.

The seat is also designed to be easier for parents to use. It’s a lightweight infant car seat that can accommodate a baby up to 35 pounds, making it much easier to carry. The harness adjusts easily from the front of the seat with a simple pull for a secure fit for your child, and the base height adjusts for the right fit to your car. The car seat is compatible with all strollers that feature QuickClick. This allows you to securely attach the infant car seat to your stroller with one simple click, making it easy to use the car seat and a stroller together as a travel system. Getting the seat clean is simple too, thanks to a seat pad that is both machine washable and dryer safe. With the onBoard™35 LT infant car seat, travel is safer and more comfortable.


Safety 1st believes parenting should have fewer worries and more joyful moments. As the first and only leader in child safety, Safety 1st is here to give you peace of mind so you can spend less time worrying and more time enjoying every first you experience with your child.


  • Rear-facing 4-35 pounds
  • Ultra lightweight infant car seat with exceptional safety using next generation engineering
  • Side Impact Protection with deep sides and energy absorbing materials
  • 4 harness heights spaced right for a better fit from tiny to tall
  • Extra newborn support with head and body inserts
  • One pull harness adjustment gives baby a secure fit
  • Adjustable base for the right fit to your car
  • Machine washable and dryer safe seat pad
  • Lightweight and easy to carry
  • QuickClick® ensures car seat attaches securely to stroller with one simple click
  • 5-point harness with up front adjustment
  • LATCH equipped
  • Airplane ready
  • Exceeds Federal Safety Standards
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