I purchased this wetsuit about 7 or 8 years ago when I started diving. I bought it based on recommendations for beginners, so it's probably 5mm thick. My build is: 175cm tall, 63kg, slender build. I usually wear a size M for clothes, which fits perfectly, or a size L to accommodate the length, but then the width is too big. I've probably dived with it about a dozen times. After that, I started renting wetsuits at dive sites, and this one has been stored at home for a while, so I'm putting it up for sale. I don't think it's particularly dirty or worn out overall. There are some noticeable marks on the white parts, but I think that's just the normal wear and tear after about 10 dives. I hope that anyone who understands this will consider purchasing it.