Profile Design FC35 Drink System Bottle Kit Black Engineered, patent-pending no-splash refill port Top section features a symmetrical NACA airfoil shape with Kamm tail, reducing overall drag Compatible with Universal Aerodrink Bracket Fits narrow mounting aerobars or wider setups with the Basebar Bracket Constuction: BPA-Free, Foodsafe HDPE Bottle, Width: Max 140mm (center to center)