Fizik tundra m1 braided saddlethe tundra is 1 of fi'zik's 3 spine concept mtb saddle shapes. Of these 3, the tundra shape is flat, narrow and long.the m1's carbon thermoplastic shell and carbon braided rail reduce weight and increase saddle stiffness.tundra m1 is for the snake flexible spineif you are very spinally flexible far less than 90 degrees between your straight legs and your back when bending over as far as you can, keeping your legs straight a shoulders' width apart, you are a snake. You achieve the performance position using your spinal flexibility alone, not rotating your pelvis at all.you will like the flat, narrow and long shape of the tundra.featuresshell carbon thermoplastic composite with wing flex for freedom of thigh movementrail carbon braided 7x9mmfront cover black microtexcentral cover gummy black microtexrear cover black microtexintegrated clip system yeslength 285mmwidth 125mmweight 165gbuy fizik components from chain reaction cycles, the world's largest online bike store.