Men's underwear, size L, with excellent heat retention thanks to ceramic processing. Features far-infrared heating patches on the knees, providing double the warmth in those cold areas. I prepared this item when I was assigned to a cold country, but I never used it and have been storing it at home for a while. - Product Name: Warm Feeling Warm Quilt Men's Quilted Underwear - Size: L (Waist 84-94cm) - Material: Outer: 100% Cotton, Inner: 100% Cotton, Filling: 100% Polyester - Features: Heat retention effect due to ceramic processing - Target: Men