(as of May 26, 2025 05:28:58 UTC – Details)
The One4Life(R) Slim all-in-one car seat takes your child from birth to big kid with trusted Britax safety, ClickTight(R) installation, and a slim SpaceSaver(TM) design. As a convertible and harness-2-booster seat in one, it grows with your child for 10 years. It starts rear-facing with an extended capacity of up to 50 lbs., so your child can ride rear-facing longer. It easily converts to forward-facing toddler mode (up to 65 lbs.) and high-back belt-positioning booster mode (up to 120 lbs.) when your child is ready. With a slim outside and spacious inside, the 17.5” seat is designed to fit 3 across* without compromising safety and comfort. ClickTight helps you install with confidence, every time. The base and shell are easy to wipe down for hassle-free cleanup. The car seat cover is safe to machine wash and dry, and it’s naturally flame-retardant with no added FR chemicals. One4Life Slim features a high-strength steel frame, a SafeCell(R) crumple zone, and a V-shaped tether. As your child grows, you can easily adjust the 15-position no-rethread harness and headrest with one hand. With cooling channels, premium padding, three infant inserts, and built-in armrests, your child will love every ride. *Britax cannot guarantee 3-across fitment in all vehicles.
All-in-One Car Seat: One4Life(R) Slim is a convertible and harness-2-booster seat in one! It easily converts from a rear-facing infant and toddler seat (5-50 lbs.) to a forward-facing seat (30-65 lbs.) to a high-back booster seat (40-120 lbs.)
ClickTight(R) Installation: Install with confidence in 3 easy steps: pinch to open, thread and buckle, click it closed!
SpaceSaver(TM) Design: Slim outside, spacious inside! The 17.5” seat is designed to fit 3 across without compromising on trusted Britax safety and premium comfort *Britax cannot guarantee 3-across installation fitment in all vehicles
Premium Car Seat Cover: Features a soft knit fabric with woven mélange accents that are made from recycled polyester; the cover is safe to machine-wash and dry and naturally flame retardant with no added FR chemicals
Trusted Britax Safety: Features a patented V-shaped tether, SafeCell(R) technology, a high-strength steel frame, and two layers of energy management
Comfortable Rides: This slim car seat includes soft comfort pads, built-in mesh cooling channels, three infant inserts, plush padding, and a tag-free headrest
Easy to Adjust: The 15-position no-rethread harness and headrest adjust together easily with one hand, and the 9-position recline has an easy-read indicator to help you find the correct angle for your vehicle
Slide-Out Cup Holders: The dishwasher-safe cup holders slide out with ease for convenient cleaning and click back into place for a secure attachment during rides
Accessible Color-Coded Belt Paths: Make it easy to route the seat belt through the correct path for each car seat mode
Hassle-Free Cleanup: Extra space between the shell and base means you can clean under the seat with ease – and with minimal grooves in the seating area and base, you can wipe it down with no fuss
Customers say
Customers find the car seat to be well-built, easy to install, and extremely comfortable, with one customer noting it provides excellent neck and head support. Moreover, they appreciate its safety features, saying it keeps children secure on the road, and like that it fits nicely in the rear seat. Additionally, the car seat is easy to clean with removable cup holders, and customers consider it worth the price. However, customers note that it is heavy and bulky.
AI-generated from the text of customer reviews
Kay. –
Very happy with this car seat!!
My little one outgrew his infant car seat and I looked for months trying to find one to suit our needs. Most importantly I was looking for additional safety features!Pros: For my Honda odyssey it fits better than my other seats (graco and Evenflo).Installation- this always gives me anxiety because it usually takes me forever to install and I never get it snug enough. The Evenflo 360 is a nightmare to install for me. This was AMAZING. I was literally telling so many moms about the installation and how fast, easy and SECURE it was.Seat cushion for younger babies has very obvious instructions on weight so you donât have to look back in the manual.The level indicator is available to see on both sides which is a big win for 2 car seats.Comfort- baby was struggling to nap in his old seat and spent hours crying. I moved him into this one and though he still has taken some time to settle in heâs actually napped for me in the seat. I truly believe heâs more comfortable.Cons: itâs very heavy! (Honestly not really a con for me, but I know for some it can be).I havenât been able to adjust my daughterâs seat to a more comfortable recline position for her comfort without keeping it within the level indicator. I need to look into this further since sheâs complaining that she feels sheâs sitting too far forward.I have 2 of these seats rear facing for my 10 month old who is 20 pounds and daughter 4 years and 30 pounds. Looking forward to long rear facing and safety with these seats
artzone –
Highly recommend
I just purchased this car seat. First offHow it looks: beautiful love the style comes in many colors and styles i did the one 4 life click tight ( it is actually true it installs tightly). Supper soft and easy to follow instructions.What features: well I purchase this for easy installation and it also looked very comfortable too when it arrived it had many cushions and air netting on the sides for to breath. Side button with one push and easy to adjust tilit It was easy to find the buttons all labeled side and under the seat.Pros: easy to read and understand, easy to adjust and installation was a breeze. Once installed correctly it dosent move at all very impressive as I have had many car seats and they always move a little even once installed correctly this one was zero movement highly recommend for safty.Con well I don’t really have any yet it is so far everything I hoped for.So weight: well it is on the more heavier side but it’s not any heavier than Carring a baby carrier with base. It is solid to carry and solid once buckled.Other qualities it also is approved for other transport such as a plan if you wish to fly.What I love is the tilt feature and how it grows with your child, easy to install and read direction on the car seat visible and it is in two languages. The cushions for the head is very comfortable.Highly recommend for baby on up however I already pass the baby stage carrier and purchase this after my child was already one. It can even use for infants up to 10 years oldAgain highly recommend
Katie –
Yup, Buy it!
Very happy with this carseat! This is the 3rd one we’ve bought. We purchased and returned two as they felt cheaply made, unsafe and we didn’t like the fit as well as how much they moved around after being tightly installed.This one is the exact opposite! It feels incredibly well made and safe, it doesn’t budge from its position tightened down in the car, our 8 month old fits great in it and I’m happy with the amount of padding around the head.Great quality, great fit, durable, manufacturer takes the safety of your child seriously! Highly recommend!
Christine Slattery –
Quality Car seat that grows with your child
Great value for the money with easy installation. Quality sturdy materials with a very handy cup holder as the child is older. Comes with Newborn insert, and grows with your child, rear facing, forward facing and booster seat in one. I was really pleased with the functionality of this Car Seat
Deborah Boyle –
Best car seat
You just canât beat the durability of this top of the line carseat
Amanda –
Safe and Comfortable
Absolutely love this car seat. Very easy install and extremely easy to clean. Would definitely buy this brand again. Worth every penny for my little to be safe and comfortable
Crystal Martinez –
Works great!
Great item! Very sturdy and secure. It was recommended by my sons pediatrician and I’m glad we bought it.
Kristen –
Very sturdy but hard to use click right difficult to click into place
I have two of this exact car seat. Both have issue with shoulder straps being even. Both car seat shoulder straps one is tighter than the other when in place on the child. Cup holders remove can be washed easily. The click tight feature to snap in place with the seatbelt are hard to snap in place if you have seat belt tight enough in my opinion. But overall very sturdy, take lbs a high amount of weight for child car seat. Has every seat option you would need as child grows. Easy push button to adjust the should height. Heavy car seat.
Yessica Betancourt –
Esa facilÃsimo de instalar con la función clicktight, es un poco más costoso que otros muy populares, pero yo lo compré en descuento y vale totalmente la pena, además es muy acolchonado para comodidad de los babies, lo recomiendo ampliamente.
SofÃa V. –
Estamos muy felices con la compra, llego muy bien empacada. Mi bebe viaja agusto, los materiales se ven de buena calidad. La recomiendo.
Marcos Josue Vargas Estrada –
Muy buena compra. El material es de primera. Mi bebé va super cómodo y se ve muy seguro. Lo recomiendo totalmente.
Rebeca Raúl –
Mi hijo le encanta. Es muy cómodo.
Miguel Alvarez –
Es tal cual se anuncian, facil insalacion, buenas calidad de materiales y un diseño inteligente que crece junto al bebe