Uniqlo HEATTECH undershirt, size 120, black, designed to keep you warm. - Color: Black - Size: 120 - Material: Acrylic, Polyester - Features: HEATTECH, EXTRA WARM Made of a warm, sturdy cotton-like material. Can be worn as a long-sleeved shirt on its own. This item was used by a child, so there is some wear and tear, but no major damage. I think it can still be used. Recommended for those who don't mind used items.