AIRFRIC 2mm Wetsuit Vest, size M. It has a front zipper. The exterior is skin type, and the interior is neoprene type. It looks gray in the photos, but it's actually black. There is some wear and tear (a 2cm fray on the inside of the right shoulder, and a slight distortion on the left shoulder? ※See photos), but there are no holes in the main body, and the zipper works fine. It says 2mm, but it feels like it's actually about 3mm thick. ^^; Regarding size M: Chest: 84cm Waist: 72cm Length: 57cm Suitable height: 168-173cm Suitable weight: 59-72kg Thank you. Outer material: Rubber Thickness: ~3mm