I purchased this on Mercari in the past and only tried it on once, but I didn't go in the ocean (I washed it after trying it on). I have reproduced the original owner's description below: As the description states, the reason I'm selling it is that the "neck entry" style didn't suit me. I usually wear neck entry wetsuits, but the ones I've used before have a style where you widen the neck opening, put your body in, and then pull another part from the back to cover your neck. On the other hand, this product is a full-jersey neck-in type, which doesn't have the "separate part" to put on afterward. It has a large neck opening, and you put your whole body in. It stretches and expands a lot, but it was difficult for me to take it off (especially taking it off). Perhaps it's easy to use for those who are used to it, but I ended up buying the type I was used to. For reference, I am 165cm and 62kg. I think the size is correct, and the product itself is excellent. I think a weight of 56-63kg would be the best match. If anyone is interested, please purchase with no returns/no refunds. ++++++++++++++++++++++ Semi-dry wetsuit 5x3 with brushed lining Neck entry model Used once a week for two seasons, washed with shampoo and conditioner, and stored in a dark place. It was semi-custom made, and I am 167cm and 63kg, and usually, ML fits me perfectly, so I think it's a similar size. There is a feeling of use, but it's a model with a special jersey material on the surface, so there are no tears, scratches, or repairs, and it's still soft, so I think you can still use it. (There are some cracks on the sleeves, which are rubber, but it's not a problem for use) It is said to maintain body temperature like a thermos bottle due to the special effects of silver and titanium, so it is very warm. The purchase price was about 100,000 yen. It will be shipped folded. No price reduction. *Please refrain from purchasing if you are nervous or seeking perfection, as this is a used item. Gender: Men's Type: Semi-dry Size: M