The Britax Grow with You ClickTight Plus harness-2-booster car seat and Britax car seat waterproof liner form a complete bundle to keep your child comfortable, safe, and clean while on the go. The 2-in-1 Britax Grow with You car seat transitions from a forward-facing 5-point harness seat for toddlers to a belt-positioning booster for older kids up to 120 pounds. Its ClickTight installation system, 9-position harness, and no-rethread headrest allow you to adjust the seat as your child grows. Once your child is ready, the harness tucks away to become a booster using your vehicle's seat belt. Features like the impact-absorbing cushion, knit flame retardant SafeWash cover, and steel frame with crumple zone provide safety, while the padding, armrests and dual cup holders add comfort. The waterproof liner complements the seat by containing spills and accidents to keep the car seat clean and dry thanks to the moisture-wicking fabric and non-slip grip. The machine washable liner fits most car seat brands and has passed crash testing. Together these components form a versatile, safe and easy-to-clean car seat bundle to grow with your child.