New, two-piece (separate top and bottom) wetsuit set. Thickness: 3mm Material: 90% Neoprene, 10% Nylon Size: Men's M (Height 165-172cm, Weight 52-60kg) I personally use this wetsuit for diving. It's made of a softer material compared to other wetsuits, making it comfortable. The material is stretchy, so it can be worn by people outside the "Height 165-172cm, Weight 52-60kg" range, but the following situations may occur: * For those smaller than the size range, there may be more gaps between the wetsuit and the body, reducing heat retention. * For those larger than the size range, the wetsuit will fit more snugly, but it may be more difficult to put on and take off.