The Men\'s Heat Holders Slipper Socks feature heavy bulk thermal yarn to keep the heat in, with grippy, non-slip pads on the base for better traction when wearing them around the house on wooden, tiled or other flat surfaces.These thick socks have long pile cushioning and heavy bulk yarn to keep warm air close around your feet. With a super-soft, brushed lining these Slipper Socks are also extremely comfortable. Ideal for those who suffer with cold feet or for colder weather.