With its durable, but extremely pliable construction, the Ultimate Direction FlexForm 500 Bottle is a great at-the-ready hydration option for running vests and packs (both sold separately). The 16.9 oz-capacity bottle weighs just 2.3 ounces when empty and has a soft silicone bite valve that ensures a leak-proof carry while delivering high-flow output when you're ready to hydrate. The ergonomic shape of the bottle makes it fit comfortably in the pockets of running vests and packs, be they located up front, on the side, or in the back.
It also allows the bottle to fit comfortably in your hand. The soft BPA-free polyethylene material is FDA-approved and dishwasher safe (top rack only).,With its durable, but extremely pliable construction, the Ultimate Direction FlexForm 500 Bottle i