We made the largest Crash Pads possible that could still fit shipping standards. The XX is constructed with burly outer material, Aircraft Grade Aluminum buckles, and dual density foam for a longer life and safer landings. Our dual straps allow you to carry the pad like a backpack on the approach, or pick it up like a duffle to move over to the next problem. No more worrying about twisted ankles from stacked pads since Climb X pads can be velcroed together to create a larger, safer, solid, landing area. At the end of a long session, go ahead and strap the pad into couch mode and chill round the fire.