Schwinn Solution FS Men's Mountain Bike (Small) 21-speed, 26-inch men's mountain bike at home both on the trail and in the city; small frame size Hand-built Hi-Ten (high-tensile) steel tube frame for added durability and long life RST Omni 191 C5 front suspension fork provides a smoother ride over rough terrain Suntour XR170, 24/34/42-teeth crank SRAM MRX grip shifters, MTB riser handlebar and stem