The Bontrager Arvada Pro Bike Saddle is a performance saddle for road & mountain bike use. The Arvada uses Bontrager’s Posture 3 position which balances comfort & efficiency to give you a saddle perfect for all day rides. The Arvada adds comfort & reduces soft tissue pressure with a strategic cut-out in the saddle shell. This allows the softer finishing material to be more compliant, so you get the benefits of a cut-out saddle with the classic look & feel of a more traditional design. The Arvada Pro has a pro-level finish, complete with carbon rails to make the saddle lighter & increase the compliance so it can soak up bumps & vibrations. Features Performance Posture 3 for pelvic rotation with a balance of comfort & efficiency Channel Flex on bottom of shell for added compliance Zone Density shell construction is strategically placed for highest comfort & performance Size Specific Curvature ensures each saddle is designed specific to its width Oversize carbon rails for the ultimate in lightweight strength in Form Bio Dynamic products optimize your natural movement for sustained, higher performance Requires oversize rail-compatible seatpost & 7x 10mm seatpost ears