The scuba diving vest(jacket style) is also known as Front-Adjustable BCD for obvious reasons. The shape is more like a vest than a jacket (no sleeves) and the adjustable closings are placed in the front.
The characteristic of a scuba diving BCD vest is that the air bladder, or where the air moves through, is concentrated in the front. The air moves through the pockets around the waist and throughout the shoulder padding.
