The Bontrager Hilo Comp Triathlon Saddle comes with the same split zone design as the Hilo Pro to provide comfort & support for all-out TT & Tri efforts. The Hilo Comp is designed for symmetric & stable pedaling in multiple positions so you can move around on the bike without losing power. The short stubby nose on the saddle makes it easier to get into a tucked aero position while the split zone structure eliminates soft tissue pressure allowing you to stay in position for longer. Dual layer foam adds extra comfort for longer efforts. The major difference between the Comp & the pro versions of the Hilo saddle is the materials used for construction. The pro uses carbon rails while the comp comes with steel ones which adds an extra 95g of weight. Features Aerodynamic Posture 1 is the most forward pelvic rotation, common in triathlons Split support zone eliminates soft tissue pressure for a more powerful rotated position Saddle nose structure is designed for stable & symmetric pedaling Strategic dual layer foam provides soft top layer for comfort & firm base for support Channel Flex on bottom of shell for added compliance in Form Bio Dynamic products optimize your natural movement for sustained, higher performance Compatible with Speed Storage system to securely hold water bottles, tube, & inflator (sold separately)