Astral Quick Release Belt, Life Jacket PFD Accessory Quick-release belt with a stainless steel ring. Designed specifically for the Astral Sea Wolf. This belt is also compatible with the Layla and Camino 200. The size of the belt should correspond with the size of your vest. Measure your chest and select your size: S/M for 31-37 in, M/L for 38-44 in, and L/XL for 45-51 in.