Aerodynamic dual-bottle BTA hydration system that features a dynamic, multi-position computer mount to accommodate your changing needs. Raise the computer mount up to tuck in a refill bottle for race day, or lower it down for a standard bottle while maintaining the optimal view for training days. Telescoping Garmin mount features on-the-go tilt adjust to avoid glare. 16-layer carbon fiber plate ensures a no-rattle, no-bounce ride. Zero-leak design with a sealed viewing window to easily monitor liquid levels, and a leak-free Dolphin Breather Valve that lets air in - but doesn't let water out. Capacity: 26oz (768 mL) Material: Plate: 16-layer unidirectional carbon fiber Cage: Carbon Torpedo Cage Computer Mount: Nylon Composite Bottle: Lead free, BPA-Free and HDPE food safe certified bottle Brackets: Nylon composite with Velcro straps coated with no-slip extension grip Adjustment Width: 70-150mm Weight:11.7 oz (332g)