NLS Wing D12 is a doughnut shaped wing designed specifically for double 12 tanks. Wing works of course also on smaller doubles as well all the way down to 7 liter doubles. Capacity of the wing is 22 liters (50 lbs). Design efforts has been concentrated around achieving good trim and ease of dumping gas through the valve or through the hose. Wing is CE approved and includes inflation hose (3/8″ attachment).