Knocker Men's Mid Weight Thermal Long-Sleeve Top Shirt 100% Cotton Mid weight waffle pattern thermal shirt. S:34~36 M:38~40 L:42~44 XL:46~48 2XL:50~52 3XL: 54~56 Great as a layering base or on it's own Warm, soft and comfortable. Machine wash seperately in cold water, Drip dry Do not iron or Bleach