100% cotton HEATTECH long-sleeved shirt, extra warm for comfortable wear. - Brand: HEATTECH - Material: 100% cotton - Type: Long sleeve - Size: M - Features: Extra warm - Technology: JAPAN TECHNOLOGY Thank you for viewing. This is a Uniqlo standard HEATTECH extra warm crew neck with a 100% cotton inner surface and 3/4 sleeves. I hope to have a smooth transaction with those who understand that this item has been stored at home. I will pack the item as compactly as possible for shipping, so please refrain from purchasing if you are concerned about this. I will do my best to respond quickly and politely, so thank you for your understanding.