For reliable hydration that will last through any mission or adventure, the CamelBak Thermobak 2L provides rapid, direct access to a 70-ounce Water Beast Reservoir. The reservoir features a HydroLink Drink Port with a signature CamelBak Big Bite Valve for maximum water flow and a HydroLock control mechanism that lets you control hydration with a single hand. The insulated PureFlow tube keeps water cold and the leak-proof cap ensures that no liquid escapes or spills when you are in motion. Built from rugged, abrasion-resistant 1,000 denier Cordura nylon, the pack can handle constant abuse on any terrain without falling apart. The quick-release shoulder strap system evenly distributes weight across the back and shoulders for a lightweight, comfortable fit, and the adjustable sternum strap provides added security, so you can stay hydrated wherever your mission takes you.