The Tundra is intended for XC and marathon use. Its shape is flat in cross-sectional profile, with an average width. Its supreme comfort and low weight are sure to take your riding performance to the next level!The Tundra M3’s K:ium rail makes it a lighter alternative to the M5 model, whilst not compromising comfort.Shell: Fibreglass thermoplastic composite with Wing Flex™ for freedom of thigh movementRail: K:iumCentral Cover: Black MicrotexFront cover: MicrotexRear Cover: MicrotexIntegrated Clip System: YesLength: 285mmWidth: 125mmWeight: 200g