The only seat you’ll ever need – from birth to big kid The Britax One4Life in Eclipse Black replaced three seats for us. Rear-facing at 5 lbs was perfect for our newborn, now forward-facing at 4 years old, and it will convert to booster when she’s ready. ClickTight install is foolproof – took 60 seconds. SafeWash cover survived countless spills and washes. Eclipse Black looks sleek and hides everything. Chose the One4Life Eclipse Black over Graco 4Ever and Diono because of Britax’s steel frame and ClickTight. Rear-facing to 50 lbs kept our tall toddler safer longer. The anti-rebound bar in rear-facing mode is a huge plus. 15-position harness grows with him perfectly. Eclipse Black stays cool and looks premium in our Tesla. We have two One4Life seats in Eclipse Black – one for each car. From infant (with insert) to high-back booster at 120 lbs. ClickTight makes switching cars a breeze. SafeWash fabric is a lifesaver with messy kids. Eclipse Black never shows dirt. Pun & Naya shipped to Australia faster than local stores!
The Britax One4Life ClickTight All-in-One Car Seat in Eclipse Black is truly the only seat you’ll ever need – it grows with your child from birth to big kid (5–120 lbs, up to 63"). Converts seamlessly from rear-facing harness (5–50 lbs) to forward-facing harness (22–65 lbs) to high-back booster (40–120 lbs).
Features legendary ClickTight installation – open, thread, buckle, close in seconds. 15-position no-rethread harness and headrest, steel-reinforced frame, two layers of side-impact protection, and anti-rebound bar (rear-facing). SafeWash machine-washable, flame-retardant-free fabric. Includes infant insert, dishwasher-safe cup holders, and CoolFlow ventilated mesh option available.
Eclipse Black offers a timeless, premium look that stays clean and cool. The ultimate 10-year car seat solution trusted by millions of parents worldwide.
Why the One4Life is our top-selling all-in-one ClickTight achieved perfect installs in 99% of parent trials – faster and more secure than Graco 4Ever DLX or Evenflo Revolve360. The dual-layer side impact protection and steel frame outperformed every competitor in independent side-impact testing. True 10-year lifespan (5–120 lbs). 15 harness positions grow longer than most all-in-ones. SafeWash cover survives 50+ washes. Eclipse Black fabric stays 10°F cooler than competitors. Anti-rebound bar included for rear-facing. Our team parents call it “the unicorn seat” – one purchase for the entire car seat journey. Eclipse Black photographs beautifully, parents tag us daily saying “finally a seat that lasts forever”. Highest repeat-purchase rate of any all-in-one we carry. 99.5% satisfaction. Most common message: “Wish we bought this from day one”. Returns under 0.2%. Eclipse Black outsells all colors 2:1 because it never shows dirt and matches any car interior.Customer Reviews
One seat for 10 years – worth every penny
Safest all-in-one on the market
Best investment for growing families
Product Description
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Product Specifications
| Attribute | Details |
|---|---|
| Brand | Britax |
| Model | One4Life ClickTight All-in-One |
| Color | Eclipse Black |
| Rear-Facing Harness | 5–50 lbs |
| Forward-Facing Harness | 22–65 lbs |
| Booster Mode | 40–120 lbs (high-back) |
| Installation | ClickTight technology |
| Key Features |
True 10-year seat (birth to 120 lbs) ClickTight easiest install 15-position no-rethread harness SafeWash machine-washable cover Anti-rebound bar (rear-facing) Steel frame + dual side-impact protection |