An Aqua Lung first! The Dimension i3 is a back inflation BC with an integrated i3 inflation / deflation system.  Loaded with features, this innovative buoyancy compensator is built with high quality materials keeping both comfort and style in mind. 

By placing the air cell behind them, the diver is more streamlined

The integrated i3 control system provides a single touch control for both inflation and deflation

Flat e-valves are very streamlined and effective. One-way design keeps water out

The multiple dump feature means that when you depress the i3 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 and efficiently distributes the cylinder weight

The Wrapture™ Harness System works in conjunction with the shoulder swivel buckles (patented) to prevent ride-up and supports the weight pockets