This demonstration video goes over the features of the Scuba 12.5 lbs OutBack Roller Backpack Bag.
Features 2 padded adjustable backpack straps.
75% more capacity.
600 x 600 Ballistic Denier construction.
4 large external pockets.
More than large enough to carry a complete set of cold water gear or 2 to 3 sets of tropical gear.
Designed to accommodate a pair of fins and more in each side pocket.