Make travel easy with Baby Trend extra stay-in-car base. Secure infant car seat base has 4-position push-button height adjustable base with level indicator for proper installation. Latch connector and push-button release make this easy for installation and removal. The base is compatible with Baby Trend Flex Loc and Ez Flex loc and Secure infant car seats 22/30/32/35 lbs, (sold separately). Care and Maintenance; The hard surfaces of the Safety Seat, (plastic components and metal parts) may be cleaned by wiping with a solution of water with mild soap. Do Not use bleach as it may weaken plastic components. Dry all surfaces with a clean towel. Do Not use lubricants of any kind on any of the components of the Safety Seat and Base, including the buckle and LATCH system.This base is not compatible with Ally 35 Baby Trend infant car seats, it is style CB79B100A. The crotch strap is adjustable in length to ensure a safe and comfortable fit for harness.