Easy, fast and secure installation, with quick-release removal from bike 3-point harness system and foam seat pad Adjustable foot beds grow with your child Fits most standard sizes and models of bikes Carries one child, age 1 - 4 (40 lbs. max.) The Bell Shell child carrier fits most standard sizes and models of bikes, and offers easy, fast and secure installation (and quick-release removal, too!). The Shell is ventilated for comfort, and features a foam seat pad, 3-point harness system and adjustable foot beds that grow with your child. The Shell carries one child, age 1 - 4, and has a 40-pound maximum capacity.