Raistyw 27.5 inch Mountain Bike, 21-Speed Mens City Mountain Bike, High Carbon Steel Frame Disc Brakes Bicycles, Black and Red

27x17.5" durable steel frame with adjustable seat height to fit men and women 4'2"-4'9" tall Thumb shifter help to switch gears with smoothness. Feature 100mm front suspension fork. The thickened fork help resistant and absorb shocks. 27.5*2.125" all-terrain tires, made of high-quality rubber, all-terrain tires have strong puncture resistance 85% assembled, easy to assemble