20" Mongoose Mode 720 Boys" Bike, Gray: * Frame: steel bicycle frame * Gearing (# of speeds): single speed 25x9 micro gearing * Brakes: rear aluminum U-brake and lever * Wheels/tires: 20" tires * Rims: alloy rims and alloy 9T cassette rear hub and front hub * Handlebars: steel handlebars * Seat: ultra light seat and post combo * Pedals: standard pedals * Crank: 3-piece tubular crank * Assembly required * Dimensions: 56"L x 27"W x 38"H