A 9.5 to 10 oz. polyester, nylon and lycra fleece, with one snag resistant, smooth knit face and one velour side. It is designed to wear the flat side out and have the soft fuzzy side against the skin to retain warmth. The fabric is high wicking to move moisture away from the skin and has an antimicrobial finish to help prevent odor retention. Added bonus, animal hair is not attracted to this fabric. 4-way stretch. Warmest when worn snug to the body.