Halcyon offers the Explorer wing for double tank diving . The Explorer wings are available in two lift capacities to satisfy various buoyancy requirements, and are able to accommodate a wide range of tank sizes, exposure protection, and equipment requirements. Halcyon explorer wings are available in 40 lbs. (18kg), and 55 lbs. (25kg) lift capacities. We also offer a special version of the Explorer wing modified for use with closed circuit rebreathers. The Explorer CCR-35 provides 35 lbs. (16kg) of lift in a unique delta shape.