Mellow Wetsuit, a 5x3 long chest zip semi-dry suit made in Japan by Warmdahl. Thickness: 5x3mm Size: Men's M Please refer to the size chart. I am 167cm and 57kg, and it was a little tight in the shoulders. Personally, I think it would be good for someone around 165cm and 55kg. I purchased this used in January of this year, but it was a little tight in the shoulders, and I washed and stored it after very few uses. Including the previous owner, it has been used about 20 times. There is wax residue, but there are no holes or noticeable damage. It was stored on a wetsuit hanger, so there are no noticeable wrinkles. The only issue is a tear in the neck area shown in the 8th image, but I think it can still be used. The fabric is thick, and I didn't feel cold in Shizuoka. I checked for water leakage before listing it, and there was a slight seepage from the armpit area. After washing and drying with wetsuit shampoo, I looked closely at the lining, and the adhesive surface of the armpit area in the 9th image was slightly peeling off, so I repaired it with glue in several places. (The image is after the repair) I have not checked for water leakage after the repair. The outer fabric is the very popular Mellow original jersey material Warmdahl, and the lining is the highest quality GIGA MELLOW, made with carefully selected threads. Please refrain from purchasing if you are sensitive to used items. It will be folded and shipped. Thank you.