The Pepper Skins bottom is designed for use as a base Layer, and provides a relaxed fit. The fabric used is 100% MTF polyester. The finish is lightly sanded for added warmth and exceptional feel. The Pepper Skins bottoms feature flat seam construction, a plush back elastic waistband, and have a warmth factor of 7 to keep you warm and comfortable. Features: Elastic waistband. Model Year: 2011, Product ID: 23214