The plump and soft fabric uses a material called grosgrain, known for being used in gym wear by the Dutch army. It's a plain weave fabric with horizontal ribs, and when turned inside out, it has a characteristic horizontal striped texture. Made of cotton, it doesn't cling to the skin, is highly breathable, and has excellent absorbency. It's stretchy and designed to fit the body. Considering its role as innerwear, the body width and sleeves are made slim. 98% Cotton, 2% Polyurethane Size M Length 63cm, Width 47cm Made in Japan Color: Gray There are no noticeable stains or major damage, but there is a moderate feeling of wear. (There are also some areas with slight pilling.) Please consider purchasing if you understand this. Pattern/Design: Solid Sleeve Length: Short Sleeve Neck: High Neck Season: Summer Season: Summer, Spring Season: Autumn, Summer, Spring Color: Gray