Halcyon Evolve 40 40lbs BC Twin BACK PLATE WING Dive System. Backplate is the standard stainless steel version - 39cm x 26cm. Comes with all harnesses accessories as pictured. The item "Halcyon Scuba Evolve 40 40lbs BC Twin BACK PLATE WING Dive System" is in sale since Saturday, May 26, 2018. This item is in the category "Sporting Goods\Scuba, Snorkeling\Buoyancy Compensators (BCD)".The seller is "e-clearances" and is located in Epping, NSW. This item can be shipped worldwide.