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Safety 1st

Safety 1st onBoard 35 LT Adjustable Infant Car Seat Base

  • Based on 7,929 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jun 21
Order within 7 hours and 10 minutes
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Recently Viewed

Color: Base - Black


Style: Extra Base


Features

  • For use with the Safety 1st onBoard35 LT infant car seat
  • Adjustable base
  • LATCH equipped
  • Stay-in-car base prevents spending time transferring base from car to car

Description

Everyone loves a little extra time. Installing an extra base in your second car makes it easier when traveling with baby. Choose your car, click in your existing Safety 1st onBoard™35 LT car seat into the onBoard 35 LT Adjustable Infant Car Seat Base, and you'll be able to get on the road right away. The base is LATCH equipped and has two position recline to help with an easier installation.This extra base is compatible with the Safety 1st onBoard™35 LT, an infant car seat that provides your baby with a superior fit. The seat (not included) is also designed to be easier for parents to use. It’s a light 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.

Maximum Weight Recommendation: 35 Pounds


Installation Type: Latch


Orientation: Rear Facing


Harness Type: 3-Point


Number of Height Positions: 1


Brand: Safety 1st


Age Range Description: Baby


UPC: 884392610449


Global Trade Identification Number: 49


Manufacturer: Dorel Juvenile Group-CA


Part Number: IC289BLK


Model Number: IC289BLK


Unit Count: 1.0 Count


Item Dimensions D x W x H: 8.5"D x 23.7"W x 16"H


Item Weight: 6 Pounds


Material Type: Plastic


Color: Base - Black


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 21

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • So cute, sturdy and soft. Not bulky! So cute, sturdy and soft. Not bulky!
Color: Lake Blue 2 Style: Original
Review Image by Briana Hall
Review Image by Briana Hall
This car seat is very nice, sturdy and the seating is so soft. Not bulky or heavy like other car seats I’ve gotten. Excited to bring my baby boy home in this. Definitely recommend!
Reviewed in the United States on December 6, 2025 Reviewed in the United States on December 6, 2025 by Briana Hall
    • Great base
Color: Base - Black Style: Extra Base
Very easy installation, easy to adjust to different cars. Secure attachment to seat.
Reviewed in the United States on May 7, 2026 by Jackie Kuhn
    • Recommend car seat for beloved one😍🧑🍼
Color: Monument 4 Style: Original
Super light with best quality, adjustable with any size great for new baby born until even 2yra.
Reviewed in the United States on January 31, 2026 by Aimal
    • Silla de auto segura, cómoda y fácil de instalar / Safe, comfortable, and easy-to-install car seat
Color: Wisteria Lane 2 Style: Original
bought this car seat for my baby, and so far it has been a great choice. It feels sturdy and well-built, which gives me peace of mind when using it in the car. Installation was quite simple by following the instructions. I like that it stays firm and secure once installed. The design is very practical, and the handle makes it easy to carry the baby without waking them up. In terms of comfort, the padding is soft and seems to keep my baby comfortable during trips. I also like the canopy, which helps protect from the sun when outside. As a small downside, it could be a bit lighter, but overall it does its job very well. In summary, it’s an excellent option if you’re looking for a safe, comfortable, and easy-to-use car seat for your baby. I recommend it for parents who want something practical and reliable. ... show more
Reviewed in the United States on March 27, 2026 by Thalia Columbie
    • The Best purchase.
Color: Lake Blue 2 Style: Original
It looked great on my baby. It's the second time I've used it from this brand.
Reviewed in the United States on April 30, 2026 by Gloria Soriano
    • Safety first baby carseat
Great beginner carseat for your infant. Has many removable pads that will accommodate for basically any baby size. We just had a 5lbs 5oz boy and he fits in it great. Seems comfortable for him he doesnt move around much and sleeps for a long time in it. The only thing I have a problem with is the way they make you secure the base in the car. One side is only held down which allows it to be able to flip forward and I don't like that but what can u do. I see alot of carseat are made like that and its kind of a terrible design. Other than that it was a great product for the price and I will probably get many years of use out of it ... show more
Reviewed in the United States on June 13, 2020 by Cory Smith
    • 10/10
Color: Monument 4 Style: Original
Muy bonito, cómodo y económico
Reviewed in the United States on May 15, 2026 by Denise Roxana Ruiz Lopez
    • Car seat
Color: Monument 4 Style: Original
Great carseat, it does its job well and is sturdy, plus it's a good purchase price.
Reviewed in the United States on October 19, 2025 by JUAN ELIUD TAPIA CARRASCO

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