Intended for XC & marathon use, the Tundra M3 is Fizi:ks most comfortable saddle for long rides thanks to its flat shape & average width, while the light construction takes your riding to the next level. A fibreflass composite shell offers excellent stiffness to weight while offering enough flex to take the edge of the trail. Additional Wing Flex technology enables the sides of the saddle to flex with your thighs to maximise freedom of movement. The durable Microtex cover is designed to withstand years of mountain abuse & can be scrubbed time & time again to come up new. Fizi:ks integrated clip system is present on the rear of the saddle & allows the use of a select range of bags & lights that mount in seconds. This version of the Tundra M3 features Fizi:k proprietary rails, K:ium. These rails offer the performance of solid titanium rails with an 8% reduction in weight & increased fatigue resistance. Description by Mark, Rutland Cycling Web Team.