This heavy duty backpack has one large compartment, six pockets, and three handles, making it a great backpack for storing and organizing your stuff. It also has one hydration water bladder pocket. The two back straps are padded and adjustable, and can be hidden inside. M.O.L.L.E. straps on front and bottom allow for endless carry possibilities. It also can be expand 3 additional inches.HEAVY DUTY: Polyester 600 D Water Resistant. High quality No.10 Zippers. Overall Dimensions of the Backpack: 20″ x 11.5″ x 11″.CONVENIENT: Expandable 2 Inches when you need more room. Front and Bottom MOLLE Panels. You can carry in two different ways: as a backpack and as a duffle bag. 4 Side Pockets for your gear.VERSATILE: It has 3 handles and shoulder straps can be hidden and use it as a duffle bag. Front Pocket with Hook and Loop MOLLE Panel for personalization with Morale Patches.COMFORTABLE: Fully Adjustable Padded Shoulder Straps. Chest and Waist Straps for a better weight balance.HYDRATION READY: It Has a Main Compartment Pocket for your Water Bladder. Up to 3 Lts Water Bladder (not included).