💦 Hydration Made Effortless! Reusable and PVC-free for a sustainable choice. No spills, just sips—stay focused on your performance. Easily fits in your gear without weighing you down. The perfect companion for your running adventures. Works seamlessly with all Nathan vests and more. 14 oz capacity Reusable & collapsible Fits all vests The Nathan 14oz Soft Flask with Bite Top is a flexible, lightweight water bottle designed for runners. With a capacity of 14 fluid ounces, it features a unique bite valve that prevents leaks, ensuring you stay hydrated without the mess. This reusable and collapsible flask fits all Nathan hydration vests and is made from thermoplastic polyurethane, making it a sustainable choice for active lifestyles.