Check the listing for details. Cressi Commander Scuba Diving BCD, X-Large. Color: Black, Condition: New. Listed at 549.95 USD. Commander offers interesting new features compared to its predecessor Back Jac. This highly successful model combines the advantages of a dorsal air chamber with the versatility of a traditional vest and provides two spacious zipper pockets in addition to an incorporated weight system. It is an interesting 100% dorsal volume product, light yet durable (3.250 kg size M), very compact and easy to transport. Now, the harness system is completely independent from the air bladder in the shoulder pad area too, giving the vest absolute stability on the diver’s body, completely freeing the chest, armpit and abdominal areas from pressure due to the expansion of the bladder against the back and around the tank. Scratch-resistant shoulder pads for use with lightweight wet suits.