The Scubapro Knighthawk is a back- or rear inflation BCD/wing. This means all the air in the BCD is positioned on your back. This drastically streamlines your BCD and makes it a lot less bulky. It also helps you with a more horizonal position in the water.
The Scubapro Knighthawk comes with Scubapro's Super Cinch Buckle system - once you've adapted the strap to your tank size you will not have to adapt the strap again. It comes with a quick release system for your weight pockets, and has 2 extra trim weight pockets on the shoulders.
The Scubapro Knighthawk has a depth-compensating cummerbund and 2 pockets with zippers and 1 expendable rollout pocket to allow for more storage space. The Knighthawk also allows for clip-on options by providing you with 4 stainless steel D-Rings.