Large, simple shoulder bag. The padded, non-slip, quick-release shoulder strap features two separate sets of PALS straps for attaching accessories. The main compartment contains numerous internal accessory pockets. There's a small internal iPod or Walkman pocket with a rubber headphone port. On one side, there are three rows of PALS straps on a flat pocket, while the other side features a water bottle pocket capable of holding a 1L Nalgene. An adjustable 3.81 cm waist strap offers extra support and security. There are drain hole eyelets throughout and three high air circulation islands to keep your back cool. The Monsoon is compatible with hydration systems and a reservoir of up to 3 L. High-quality closed-cell foam padding material #AS-100 for superior impact protection. High-tensile nylon webbing. Heavy-duty #10 zippers. UTX-Duraflex nylon buckles for low-noise closures.