Product details Mongoose 26-in. Durham Unisex Mountain Bike, Red and Black, 21 Speeds Mountain bike with lightweight aluminum frame and suspension fork that��s ready to take on the trails. 26-inch wheels fit riders 64 to 74 inches tall. Element suspension fork helps smooth out bumps in the trail for a more comfortable ride. 21-speed trigger shifters provide effortless gear changes. Front and rear mechanical disc brakes deliver all weather stopping power. Alloy double wall rims with 2.3-inch wide mountain tires provide lightweight strength and improved traction.SpecificationsBrand:MongooseBicycle Type:Mountain BikesBicycle Wheel Diameter:26\”Age Group:AdultNumber of Speeds:21 SpeedColor:RedFrame Material:AluminumAssembled Product Dimensions (L x W x H):35.37 x 28.69 x 42.05 Inches