The Schwalbe Smart Sam is an impressive, perennial favorite with excellent all-round properties. For MTB riders who frequently switch between road and offroad terrain, the Smart Sam is an ideal choice. Edged outer blocks simultaneously provide safety and optimum off-road grip Multiple sizing options available to fit a wide range of bicycles Puncture protection and durability where you need it The modern, distinctive off-road tread design stands out due to the dense center lugs, which provides comfortable rolling with low vibration and long durability