racing bicycle comfortable,beautiful, fashion and safe. best competitive price excellent quality 21speed Riding Style:mountain Bicycle Frame:steel FrameRear Derailleur: SRAM 3.0 Front Brake: Alloy Linear Pull Rear Brake: Alloy Linear Pull Wheels: Alloy, Quick-Release Handlebars: MTB Seat: MTB Racing, Quick-Release Pedals: MTB w/ Toe Clips Assembly required Instructions included