Lightweight and sleek Low Pro hydration pack stores its 2 liter (68 oz.) bladder in its own compartment separate from your other gear. Velcro loops secure the bladder so there's no slippage. A large fill opening allows for fast fills and ice. An adjustable cord system straps items securely when they're not in use. Dual velcro loops secure your hand pump. 3 zippered outer pouches secure your ID, cash, energy gels, cycling jacket and more. Adjustable shoulder and sternum straps.