Lightweight model of classic wing for doubles. The same double-shell construction but the cover is made of lighter material Cordura 1000. The inflator end-piece is made of high quality techno-polymer. Circular style wing for diving with doubles. STREAM RING 20 was designed for diving with double tanks from 2x7-2x12 and stage. Due to the small profile, along with sufficient lift, this wing is especially suitable for recreational tec diving. material: Cover Cordura 2000, high-frequency welded inner tube Cordura 560 with PU seam coating, zip RiRi. Lift capacity: 20litre/ 44lbs