Please be sure to read my profile. HEATTECH Cotton Crew Neck T-Shirt (Long Sleeve) M size, White After purchasing new, I wore it 2 or 3 times, but I'm selling it because the size doesn't fit. It has been washed. The following is a description from the HP: A collection by a design team led by Artistic Director Christophe Lemaire, pursuing a high-quality wardrobe with the Paris R&D center, where information on fashion and new materials from around the world is gathered. - Uses HEATTECH, which has heat generation, heat retention, antibacterial, stretch, and moisture absorption/release functions. - The outer is made of cotton material, and the back thread uses a thread with HEATTECH function, giving it a look that doesn't look like an innerwear. - A long-sleeved HEATTECH T-shirt that can be used not only as innerwear but also as outerwear. - Inspired by vintage military underwear. - The wide crew neck design with a high neckline and slightly longer ribbed cuffs are design points. Material Body: 74% cotton, 9% polyester, 8% rayon, 5% acrylic, 4% polyurethane / Ribbed part: 73% cotton, 27% composite fiber (polyester) Handling Machine washable, use a net #Uniqlo #UNIQLO #UniqloU #UNIQLOU #uniqlo #HEATTECH #HEATTECHCrewNeckT #HEATTECHCotton