Heat Holders Women's X-Warm Base Layer Tops are a medium weight thermal base layer ideal for very cold days. Supersoft Heatweaver yarn is carefully brushed both inside and out to maximize warmth and softness. Our innovative technology produces a multi-directional stretch for maximum freedom of movement create a non chafe fit| Perfect for layering| Flat comfort seams| This item purchased online must be returned to the vendor by mail only. This item cannot be returned to stores| Moisture and odor management| Imported