The original Pepper in the Hot Chillys Peppers Collection, Pepper Skins are your standard, dependable thermals. Originally designed with the working professional in mind as a warm base layer, the fabric of these black thermal pants features our staple Mtf polyester fibers, which work to transport moisture away from the skin as you go about your day. These men's base layer pants feature a flat seam construction for seam strength, durability, and longevity, front fly, and a relaxed fit for everyday comfortable use.