Armor Ballistic Backpack: Large mesh pocket in main compartment Front pocket holds optional regulator bag Dual extra large side pockets Padded side carry handle and should strap Backpack straps with maximum strength loop construction Zipper closure for backpack straps Padded front and back Ballistic nylon YKK self-lubricating zipper opens the entire front for easy entry Maximum anti-abrasion protection (corner piping and PVC covered bottom)