29" Mantis Colossus Men"s Mountain Bike: * Red * Mountain bike * 19" frame * Steel frame * 21 speeds with Shimano twist-grip shifters * Rear Shimano derailleur * Front disc brake and rear V-brake * 29" aluminum wheels * Weight: 36.5 lbs * Assembly required (approximately 15 minutes) * Dimensions: 73"L x 24.5"W x 40.75"H