Mens Hydration Ready Outdoor Tactical Gear Hiking Backpack Daypack Bag 21 Inch 3 front zippered pockets, 3 side pockets(1 mesh, , 1 zippered, 1 for water bottle) Adjustable load compression straps that keep load tight: 2 top, 2 side, 2 bottom Padded adjustable shoulder straps with chest strap and waist buckle straps for perfect fit and load stability Large main compartment with 11in(L) x 6.5in(W) water bladder pocket including pass through hole at the top and can easily fit laptops up to 17 inches Material: 600D High Density Polyester; Dimensions: 21 in (L) x 15 in (W). x 8 in (D); Volume: 2800 cu. in.