You can easily upgrade the system with a weight system or just dive it with a belt. With the 30lb of lift it will certainly meet the needs of most divers, advanced and novice. 30lb lift 15 mil urethane inner bladder.26" x 19" x 3 approximately. OPV positioned at the bottom left. Airway connection at the top left with an abrasion resistant sleeve for protection. Backplate & harness can be used with any Zeagle single or twin tank bladder system. Bladder lift capacities from 34 lb to dual redundant 85lb assemblies. Extended slot on plate makes aligning dual cylinder systems a snap! The backplate combo is an expandable platform for building your ultimate setup. With its capability to mount single or double cylinders, along with crotch straps, scooter rings, sling bottles, shoulder pads, torch canisters and more, Zeagles durable stainless steel backplate with simple, single-webbing harness, gives divers endless options to customize. The item "Zeagle 30lb Lift Donut Bladder/Backplate System" is in sale since Friday, May 26, 2017. This item is in the category "Sporting Goods\Water Sports\Scuba & Snorkeling\Buoyancy Compensators". The seller is "diversdiscountflorida" and is located in Fort Lauderdale, Florida. This item can be shipped worldwide.