XS Scuba Roller Backpack: Extra large for today's larger size equipment Large mesh pocket in main compartment Front pocket holds optional regulator bag Dual XL size side pockets Backpack straps with maximum strength continuous loop construction Zipper closure for backpack straps Padded front and back 1680 Denier ballistic Nylon #10 YKK self-lubricating zipper opens the whole front for easy entrance 100% non-corrosive components Maximum anti-abrasion protection (corner piping, PVC covered bottom)