Aqualung Dimension i 3 Wing An Aqua Lung first! The Dimension i 3 is a back inflation BC with an integrated i 3 inflation / deflation system. Loaded with features, this innovative buoyancy compensator is built with high quality materials keeping both comfort & style in mind. By placing the air cell behind them, the diver is more streamlined The integrated i 3 control system provides a single touch control for both inflation & deflation Flat e-valves are very streamlined & effective. One-way design keeps water out The multiple dump feature means that when you depress the i 3 lever, all of the flat e-valves open at once! No more reaching for the wrong valve Custom backpack is thin to keep cylinder close to your center of gravity & efficiently distributes the cylinder weight The Wrapture™ Harness System works in conjunction with the shoulder swivel buckles (patented) to prevent ride-up & supports the weight pockets The patented Sure Lock™ II weight system provides a simple, single pull release. Loading is as simple as insert & “click” Pull down oral inflator is easy to deploy & stow A strong retractor band is used to pull in the sides of the bladder while deflating An adjustable chest strap can be raised & lowered on a rail system HP & MP hose routings through the back keep your entire kit low profile thus minimizing drag