Polyester Imported Forever air rubber tires with all-wheel suspension provide a comfortable stroll on any terrain Adjustable handlebar and hand-operated parking brake provide comfortable steering and control, all within arm's reach Customize your ride for 4 different modes of use with accessories like the infant car seat, pram, glider board, parent console, child tray, and more (sold separately) The included infant car seat adapter is compatible with all Baby Jogger infant car seats Create a travel system with most Britax, Chicco, Clek, Cybex, Graco, Maxi Cosi, Peg Perego, and UPPAbaby infant car seats (adapters for other brands' infant car seats sold separately)