Thank you for viewing. Size: M (I usually wear a Uniqlo T-shirt size S-M) The material is thin and comfortable for summer. There are some fold lines because it was folded and stored... If you have any concerns, please comment and I will add more photos. When shipping, I will try to make it as small as possible, so there may be some fold lines. Please understand. Please purchase with the understanding that this is a used item.