FULL-FEATURED COMFORT The ST Elite System combines Hollis' most popular single tank components into one, including the Elite 2 harness for the ultimate in features and comfort in a backplate and harness system. This kit is preassembled from the factory and includes unique components depending on the configuration. For warm water and travel destinations we have the ST Elite Travel, which includes the ST22 wing Aluminum backplate 2.0, Delrin cam bands and Backplate backpad 2.0. While those diving in colder waters can choose the ST Elite system, which includes the ST35 wing, Stainless backplate 2.0 and Backplate backpad 2.0.