Scuba Dive Bag

This Akona Roller Backpack has been used for 4 dive trips and is in excellent shape. It has wheels, a telescoping handle, padded backpack straps, large outer pockets and a roomy main compartment. Heavy duty zippers offer easy access to main compartment. Dual exterior pockets hold a pair of diving fins. Also includes an exterior regulator bag with locking D-ring. $150 OBO.

how big is this bag- volume wise? is it one big compartment on the inside?

thanks.