●Extra large 2 liter bladder. BPA free. Large screw cap for easy water access ●Convenient large pocket with a zipper to hold any extra tools, food, or gear ●Adjustable straps to fit most body types. Breathable open straps for constant air flow to reduce sweating ●Durable nylon material to handle any hiking, biking, or running Adventure ●Hydration pack is water resistance to keep your belongings dry in any conditions