UNIQLO HEATTECH turtleneck sweater, gray, made of 70% acrylic and 30% wool, providing excellent heat retention. - Brand: UNIQLO - Model Name: HEATTECH - Color: Gray - Material: 70% Acrylic, 30% Wool - Style: Turtleneck Green is also available. I believe I wore it once or twice. I don't see any noticeable stains, but there might be something I missed, so please understand that this is a used item.