Mares" new Jacket Style Dragon Bladder design is tightly tailored to reduce drag, placing much of the air cell around the tank. The air cell is contoured to greatly minimize the feeling of the bladder underneath your arms, and gives comfortable surface flotation. All that ergonomics and still has a lift of 44 lbs (20 kg) size lg.Innovative Protective buoyancy Cover Material: Superior combination of 3D Alutex net adds protection, abrasion resistant, with a smooth shield fabric covering. The Air Cell is made of durable (420) Cordura denier. The Mechanical Release System (MRS Plus), Mares evolution of the first mechanical weight system introduced to the market, incorporating a newly designed buckle system, one pull movement to release your weights. Ergonomically shaped pockets to form to your waist, with large, zippered opening allows for easier insertion of weights. Max load of 13 lbs (6 kg) with most sizes. Inside Velcro to section the pocket in case you don"t use the full capacity.The Dragon has two rear trim weight pockets holding up to10 lbs (4.5 kg) total. These pockets are positioned in the lower part of the BCD for better upright body efficiency at the surface, and a more streamlined profile. Back Protection System (BPS Plus) patented dual position lumbar capability. Heavily padded in either position, you can double the padding for increased lumbar support or extend the length of the padding depending on body shape for ultimate pre-dive comfort.Sm