Profile Design's Aero HC System straightforward build makes it one of the most efficient triathlon hydrations systems on the market today. The Aero HC features a BPA free bottle that is bullet shaped, and a shrouded straw mount to create the ultimate aerodynamic profile. The system mounts to your extension bars and offers an adjustable width of up to 140mm. Profile also includes a computer mount near the aft portion of the bottle, which sleekly consolidates your set up. Finally, the system is compatible with Profile's Basebar Bracket attachment, and that it has a 80 120mm width from center to center.