Liang Rou Women's Round Neck Ultra-Thin Underwear Long Sleeve Shirt Top Ultrathin thermal underwear shirt. Great to wear for sleeping or add an extra layer of warmth under your clothes. 95% Modal 5% Spandex. High elastic knit fabrics. Ultra soft, breathable and well adapts to the body. Machine Wash. Classic Round-neck. (Deep round neckline on front & normal on back) Basic long-sleeve shirt, perfect to match any coat, sweaters, sleeveless smock dress etc. Please according to the size info below (Product Description ) and Choose the suitable size.