Scubapro S - TEK Donut Wing 40 + S - TEK Pure Harness SSThe SCUBAPRO S TEK Pure Back Plate Wing System provides a streamlined, DIR aligned setup for technical divers who prefer twin tank diving on scuba and underwater missions. This complete kit blends a Pure Harness with Back Plate and a Donut Wing (40 lb or 60 lb lift) to maintain stable buoyancy and precise trim in demanding dive conditions. Key construction details focus on durability and predictable performance. The outer shell uses PU coated 1000