?Materials?: 3mm high quality neoprene with stretchable nylon fabric on both sides; Heavy duty 10V back zipper; ?Features?: Diamond shape embossed CR smooth skin chest and back panels provide good wind sheild function; Overall durable flatlock stitching; ?Ergonomic design?: provide good body fitting. ?Warranty?: We used the best Neoprene material and mature process for Flatlock stitching and blind stitching to ensure the product is comfortable for user and fastness, and we guarantee to renew a new one if any damage happened in a normal usage