Tundra m3 the tundra saddle range is made for cross country riding and racing it has a relatively long flat narrow shape that allows for great power transfer and great support along with flexibility of movementthanks to our choice of materials and advanced hand made processes its also very light the tundra m3 features a strong light composite carbon co injected nylon shell with wing flex technology which enables flexibility where your thighs meet the saddle and an allow kium rail