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Description
britax highway car seat BritaxThe One4Life Slim all in one car seat takes your child from birth to big kid with trusted Britax safety, ClickTight installation, and a slim SpaceSaver 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
The One4Life® Slim all-in-one car seat takes your child from birth to big kid with trusted Britax safety, ClickTight® installation, and a slim SpaceSaver™ 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® 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.
- All-in-One Car Seat: One4Life® 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.)
- 10 Years of Use: This slim all-in-one car seat grows with your child from 5 to 120 lbs. and up to 63” tall
- ClickTight® Installation: Install with confidence in 3 easy steps: pinch to open, thread and buckle, click it closed!
- SpaceSaver™ Design: Slim outside, spacious inside! The 17.5” seat is designed to fit 3 across without compromising on trusted Britax safety and premium comfort.
- Premium Fabrics: The woven mélange accents give the car seat cover a tailored look, while the soft knit fabric on the padding and inserts helps keep your child comfortable during every ride
- Woven Accents on the Exterior and Comfort Pads: Made from recycled polyester
- 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
- SafeWash® Fabrics: No more hand-washing or waiting for the cover to air-dry; just quick and easy cleanup so you can keep moving
- Naturally Flame-Retardant Cover: With no added FR chemicals
- Three Removable Infant Inserts: Help provide a better fit for infants 20 lbs. and under
- Accessible Color-Coded Belt Paths: Make it easy to route the seat belt through the correct path for each car seat mode
- 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
\Cup-Holder-Free Option: Remove the cup holders completely and insert the armrest caps to save additional space - 15-Position No-Rethread Harness and Headrest: Adjust together quickly and easily with one hand to help create the proper fit as your child grows; no rethreading, ever!
- Patented V-Shaped Tether with Staged-Release Stitches: Helps slow and reduce forward movement during a crash
- High-Strength Steel Frame: Reinforces the seat structure to help keep it sturdy and stabilized
- Quick-Push, 9-Position Recline with Easy-Read Indicators: Helps you find the most comfortable fit for your child and the correct angle for your vehicle
- SafeCell® Technology: Acts as a crumple zone, absorbing crash energy to help keep it away from your child
- Two Layers of Energy Management: The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe
- Soft Comfort Pads: Help prevent the harness from rubbing against your child’s skin
- Flip-Forward Buckle Pad: Stays out of the way for easy boarding; made with extra padding for premium comfort
- Built-In Cooling Channels: Improve airflow to help keep your child comfortable
- Plush Padding: For superior comfort and a quiet ride
- Easy-Pull Harness Adjuster: Lets you tighten the harness using just one hand
- Harness Holder Slots: Keep the harness straps out of the way while your child gets in and out of the seat
- 5-Point Safety Harness with Diamond Weave Webbing: Provides adjustment points at the hips, shoulders, and between the legs
- Tag-Free Headrest: Supports your child’s head and neck without irritation
*Britax cannot guarantee 3-across fitment in all vehicles.
Specifications
- Dimensions: 24.5"H x 18.5"D x 17.5"W
- Weight: 28 lbs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 668 reviews
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Product Reviews
★★★★★ 5
Fabtastic!
Format: Paperback
Absolutely loved this. Definitely worth getting.
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Reviewed in the United States on May 19, 2023
★★★★★ 5
Sweet story with likable characters
Format: Paperback
This book is an easy, engaging read with two characters who feel real and fun to follow. I especially loved the gay characters and their storylines. They are written with warmth and honesty, and their relationship gives the book a lot of heart. The pacing moves well, and the mix of light and emotional moments keeps you pulled in. If you enjoy character driven stories with genuine charm, this is a great pick.
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Reviewed in the United States on November 20, 2025
★★★★★ 4
Such a fun book
Format: Hardcover
This was such a cute and quick read. I loved both Arthur and Ben's characters because they were so different, but just so great together. I can really relate to both of them - Arthur's high fast energy and Ben's constant doubt in himself. I especially loved watching how the two of them grew because of the other, without even realizing it.
Watching these two find each other and try to navigate the beginning of a relationship was so adorable and pulled my heartstrings. I love that it wasn't perfect or easy for them, which seemed so real. I also like that this book didn't just focus on this one relationship, but also contrasted to other relationships, both romantic and platonic of their friends. It shows that no relationship is predictable, easy or perfect.
The writing was wonderful and though Arthur and Ben's narratives were very distinct, I couldn't tell that this was written by two authors instead of one. The story flowed so nicely and had so many ups and downs that I was filled with emotion. Though this was not a "traditional" happy ending, it was still a happy one that had me smile. It was a bit open ended so I am content to imagine my own future for these wonderful characters.
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Reviewed in the United States on May 6, 2019
★★★★★ 5
Craigslist
Format: Kindle
This story brings love and part together and create something out of the ordinary. It shows the love for the world and how the world can bring two people close. I really think it shows that our future will be better. I would definitely read this book if you are into romance and New York City. Maybe this can happen to you!
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Reviewed in the United States on May 26, 2026
★★★★★ 5
"I just think you're meant to meet some people. I think the universe nudges them into your path."
Format: Hardcover, Format: Hardcover
There is something magical about this time of year. I spent the last couple of days eating way too much food, shopping for gifts, and decorating the house for the holidays. And though this year required us to do things differently than we have in years past, those holiday traditions still bring the same amount of magic that they always have. One of my favorite things to do this time of year is to curl up next to the fire with a good book. The Texas weather finally brought us winter this weekend, so I decided to take full advantage and finish reading What If It's Us. This cute love story was the perfect way to kick off the holiday season.
Arthur is soaking up every moment of his summer internship in New York. The soon-to-be high school senior is completely committed to taking in all of the sights and sounds of the city life, even if that means neglecting the duties of his job. Today though, his internship has sent him on a mission that allows him to fulfill both of his desires. Today, he's been tasked with dropping off work documents at the post office. Yes, this is just a simple errand, but the city is ripe with adventure and opportunity.
Ben is at the post office for an entirely different reason. He's got a box full of stuff that belongs to his ex-boyfriend. The breakup is still so fresh and difficult that Ben can't bear to even see his ex. Having all of this stuff that reminds him of the relationship isn't helping either. It makes sense to just mail it all back to him and rid himself of that part of his life for good. As you can imagine, fate has other plans. Ben and Arthur meet in line at the post office and have a really cute conversation. The spark between the two is undeniable, but then they are separated. Was this just a chance encounter meant to fill that small moment of time, or is this something more? You'll have to read to find out.
I was so drawn into the story and characters that it is almost impossible for me to objectively comment on this book. In What If It's Us co-authors Becky Albertalli (of Simon vs the Homo Sapiens Agenda fame) and Adam Silvera deliver the kind of meet-cute YA romance that you'll have a hard time putting down. I don't normally read this genre, so I was a bit apprehensive at first. As I started reading, I couldn't help but find little pieces of myself in each of the characters. There's something about navigating the final years as a teenager that is universally relatable. Take away the fact that the main characters are gay (this story could have been equally effective with a heterosexual couple), and you are still left with a story that is just too compelling to not read. Is this a great work of literature that will be touted for its prose and structure? Of course not. But there's so much about What If It's Us to like about that you won't mind the little things that would normally detract from a novel. A sequel has recently been announced, and I really can't wait to read more about these characters.
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Reviewed in the United States on November 30, 2020