Made from stretchy synthetic neoprene, the wetsuit is completely waterproof with insulating gas cells.2.5mm wetsuitSuitable for spring/summer surface watersportsFlatlock seamsBack zip fasteningKey pocketTaped seams: 54 X 57 X 2.5Size range: 150 X 140 X 0.5Fabric: 90% Neoprene / 10% Nylon