The Unisex Life sports Gear Typhoon 5 L Hydration Vest red is crafted with nylon, spandex, and polyester fibers for a lightweight, breathable fit. With a 5 L capacity, a water bladder compartment, 9 separate pockets, and adjustable buckles, this vest is designed for your active lifestyle. It also features reflective accents and a built-in alarm whistle for added safety during night runs. Soft flasks (16 oz / 450 ml) included.