These winter-weight thermal crew socks feature a soft sherpa-lined interior providing maximum warmth during the cold seasons. They come with silicone gripper dots on the sole to prevent slips and falls. They are comfortable for wearing with any sleepwear while lounging around the house. Available in multiple colors and patterns. One size fits up to US men's shoes size 11.5. Made with 73% Acrylic and 27% Polyester. Machine wash gentle cycle in laundry bag, line dry. For best results, hand wash.