The ideal hydration solution when you are looking to stay light on the move. Made by HydraPak, this durable soft flask can be frozen or filled with hot water and is 100% BPA- and PVC-free. Armed with a high-flow silicone bite valve to quickly quench your thirst, its minimal pack volume shrinks as you drink, making it the perfect choice to pair with a race vest or stash in your pack on your next adventure.