This is a "SEAC" long john wetsuit. The size is probably M. If you are interested, I can measure the suit's dimensions. ○ Product Specifications Neoprene wetsuit Jersey fabric on the inside, skin lining on the cuffs, etc. to prevent water from entering 5mm I received this as a gift, but I've only worn it a few times. It's still in good condition!! There are no tears, and although it was oversized, I was able to dive without feeling cold or stressed thanks to the skin lining that prevents water from entering the cuffs. Probably size M *Please purchase only if you understand that this is a used item. #wetsuit #diving #snorkeling #rashguard #5mm #longjohn