The Guide Series Heavyweight Fleece Quarter-Zip Base Layer Top keeps you warm and comfortable in extreme cold conditions. The shirt's smooth, pill-resistant exterior slides easily under top layers and is antimicrobial-treated to help inhibit the growth of odor-causing bacteria. The soft, brushed fleece interior wicks moisture away from your skin to keep you dry while providing plenty of cozy warmth. Low-profile flatlock stitching won't chafe or bind and reduces bulk for easy layering. The quarter-length front zipper allows controlled ventilation so you don't get overheated. The top is made from a rugged, heavyweight blend of 92% polyester and 8% spandex fabric. Imported.