This is a custom-made, all-5mm, separate-type wetsuit for diving that was ordered several years ago. I am 165cm tall and weigh 60kg, and I usually fit a size ML wetsuit off the rack. It's a set consisting of a top and long johns. The inside is rubber, and the outside is jersey. Although the rubber has hardened with time, there shouldn't be any major problems since it's for diving. The zippers work perfectly fine. This is recommended for those who enjoy diving during the winter season. Please understand that this is a used item before purchasing.