Connelly's Reverb competition vest utilizes a 4-way stretch neoprene and thin, super soft foam to keep the vest feeling snug over every contour of your chest and back. The Reverb vest incorporates an X-shaped segmented back panel to give the rider 360° of mobility when tweaking grabs or getting inverted. Constructed with a simple front zipper for easy entry and exit. Contoured armholes are not bulky and won't hinder your progression out on the water. Not USCG approved. Sizes: S(32"-36"), M(36"-40"), L(40"-44"), XL(44"-48").