Sling pack is made of durable 900D polyster, and size: 12 * 9.5 * 6 inch (H*W*D), it's enough for carrying 9.7 iPad, small notepad, keys, wallet, cell phone, flashlight, gloves, bottle of water,etc. on a daily basis. Tactical sling bag with large Velcro pad in the concealed main compartment and the back compartment. Awesome as a pistol range bag for 1-2 handguns and lots of ammo or as tactical assault pack. Sling bag backpack has adjustable and comfortable shoulder strap, and also has two smaller straps they help reduce the sway of the bag while moving as small military rover shoulder sling backpack. It allows you to configure your pack to carry it as a Sling bag, Chest Pouch, tactical pack or simply Hand Carry it by the Hand Strap. A generous number of dividers, straps, clips, loops, pockets, and snaps give this Compatible Pack endless configurations for whatever your specific needs are.