The Vortex vest is maxed out on comfort and style but still has space for US Coast Guard approved flotation. High performance vest features ergonomic chest flex sections and a unique back flex section. This much needed flexibility helps you rotate through that trick you've been trying to land. Convenient front zip and snap buckles with hidden straps provide for easy entry and a secure fit. USCG Approved. Sizes: S(32"-36"), M(36"-40"), L(40"-44"), XL(44"-48"), 2XL (48"-52").