The Polarmax Single Layer thermal underwear is designed for reliability and comfort. Ideal as a base layer for work or play, it features Acclimate Dry polyester fibers to wick moisture away from the skin. This men's crew neck thermal offers a flat seam construction for durability and a relaxed fit for everyday wear. 100% polyester Men's thermal crew neck with binding Acclimate Dry fibers manage moisture Mid-weight warmth with a relaxed fit 175 gsm Imported Order today!