Britax Willow™ S Infant Car Seat with Alpine Base
The Britax Willow™ S Infant Car Seat with Alpine Base is a rear-facing infant car seat designed for babies from 4–30 lbs and up to 32" tall. ClickTight® installation helps simplify vehicle setup, while the RightSize™ system provides multiple adjustment points to help create a more customized fit for your baby.
The included Alpine base adds a ReboundReduce™ Stability Bar and SafeCell™ technology to help manage movement and crash energy. A slim SpaceSaver™ design helps preserve valuable back-seat space, while naturally flame-retardant fabrics with no added FR chemicals and a washer- and dryer-friendly cover make everyday care easier.
Designed for a Customized Infant Fit
The Willow S uses Britax's RightSize system with adjustment points at the hips, shoulders and between the legs. These adjustments help parents tailor the harness fit as their baby grows during the infant car seat stage.
Britax Willow S Key Features
- Rear-facing infant car seat supports babies from 4–30 lbs
- Suitable for children up to 32" tall
- ClickTight installation is designed to simplify secure vehicle setup
- RightSize system provides adjustment points at the hips, shoulders and between the legs
- 5-point harness helps keep your baby securely positioned
- ReboundReduce Stability Bar helps minimize movement during a crash
- SafeCell technology acts as a crumple zone to help manage crash energy
- SpaceSaver design keeps the seat slim on the outside while maintaining interior room for your child
- Quick-push lower connectors lock into place with a click and release with the push of a button
- Naturally flame-retardant fabrics are made without added flame-retardant chemicals
- Removable cover is washer- and dryer-friendly for easier cleanup
- Lightweight carrier weighs 8.69 lbs without the base
Britax Willow S Specifications
Child Fit
- Rear-facing harnessed weight: 4–30 lbs
- Maximum child height: 32"
Product Dimensions & Weight
- Car seat weight: 8.69 lbs
- Base weight: 9 lbs
- Product dimensions: 28" L × 17.5" W × 24.11" H
Interior Dimensions
- Seat back compartment height: 21"
- Seating area depth: 12"
- Seating area width: 9.5"
- Shoulder width: 10"
- Harness slot heights: 5.5", 7.5", 9.5", 11.5"
- Buckle strap depth: 2.25"–5.5"
- Useful life: 6 years
Stroller Compatibility
- Britax B-Free and B-Lively — adapter required
- Britax Brook, Brook+ and Grove — no adapter required
- BOB Gear Wayfinder, Alterrain, Revolution Flex and Renegade Wagon — adapter required
- Nuna DEMI Grow, IVVI Totl and PEPP Next — adapter required
- UPPAbaby VISTA V2, CRUZ V2 and RIDGE — adapter required
- Maxi-Cosi Zelia — adapter required
- CYBEX Eezy S Twist — adapter required
ClickTight Installation
ClickTight technology is designed to make installation easier to understand and repeat, helping parents install the Willow S with confidence for everyday travel.
RightSize Fit System
The RightSize system provides adjustment points at the hips, shoulders and between the legs to help create a more customized harness fit from your baby's first rides onward.
ReboundReduce Stability Bar
The Alpine base includes a ReboundReduce Stability Bar designed to help minimize movement during a crash and provide additional stability during rear-facing use.
SafeCell Crash Energy Management
SafeCell technology is built into the base and is designed to function as a crumple zone, helping manage crash energy before it reaches your child.
SpaceSaver Design
The slim exterior helps preserve rear-seat space while maintaining a comfortable seating area for your baby, making the Willow S a practical option for everyday family vehicles.
Washer & Dryer-Friendly Cover
The removable fabric cover can be machine washed and dried, reducing the need for hand washing or extended air-drying after everyday spills and messes.
