New circular style wing for diving with doubles. STREAM RING 23 was designed for diving with double tanks from 2x12-2x18 and several stages. 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: 23liter/ 51lbs