This is the Dive Rite Aircell Rec XT Hybrid Wing Single or Double Tank Bladder Features: Black outer bag is made of SuperFabric brand technology and 1000 denier Cordura offering superior durability. Inner bladder is constructed from heavy-duty 210 denier nylon laminated bladder which is highly resistant to pinches and punctures Urethane flanges are welded in place, which make it easy to switch out corrugated hoses and over pressurization valves without tools Comes equipped with 16-inch rapid exhaust (pull dump) Two sets of marine-grade 316 stainless steel grommet mounting holes are used to attach wing to harness and/or to double tanks and set diver trim Approximate dimensions uninflated: 24-in H x 23-in W (60.9cm x 58.4cm) 3lbs (1.3kg) Model #BC5300 A hybrid wing, the Rec XT can be worn on single or double tanks making it one of our most popular wings. When diving single tanks, two clips on each side of the wing attach to D-rings on the backplate, keeping the wing close to the diver&';s body. Available in single or dual bladder, the Rec XT has 45lbs/20.4 kg of lift and can accommodate two 85ft3/12 L back mounted cylinders. The XT Wing Series is built upon the legendary toughness of SuperFabric brand technology, a technical fabric resistant to cuts, pinches and abrasions. Created with a base fabric overlaid with tiny guard plates, this proprietary armored surface, along with material science and strategic geometric patterns, transforms ordinary fabric into SuperFabric brand materials. The material maintains its flexibility and breathability, yet keeps sharp objects from penetrating.