Cotton-blend Rubber sole Slip these on to keep your feet warm, comfy, and healthy. This moc style slipper is made from SILVADUR anti-odor fabric, a patented garment finish that releases silver-ions to eliminate odor-causing bacteria in footwear. Closed back design makes sure the slippers stay on your feet as you walk, especially helpful when climbing up or down stairs. Cotton knit upper and moisture-wicking terry lining allow your feet to breathe. The entire slipper is machine washable so you can easily get rid of sweat, dirt, or stains. High density memory foam insole (non-removable) molds to the contours of your feet for pillow-soft comfort, with minor arch support to help relieve mid-foot stress. Sturdy rubber sole with anti-skid traction lets you step outside the house to pick up the mail or take out the dog without switching shoes. Dual elastic gores give your feet room to flex when moving, and stretch to comfortably fit high instep, wide, or swollen feet. Product designed and quality inspected in the USA, with a 24/7 US-based support team ready to take care of all your after-sale needs.