The Heat Holders Solid Crew Slipper Socks for Men deliver the same warmth as the ORIGINAL Heat Holders Crew sock, but in an extra-large size and slipper style. Nonslip grippers on the bottoms provide better traction on indoor wood or tiled surfaces. Thick, chunky and with a massive tog rating of 2.34, Heat Holders are made from a specially developed heavy bulk yarn which has extreme thermal qualities. With long pile cushioning, these men's thermal socks will help keep feet fully comfortable and supported. The inside of each sock has been intensively brushed such that they not only feel sensationally soft but also trap warm air close to the skin keeping your feet warmer for longer. Non-binding. They are diabetic friendly and provide relief for cold feet due to circulation problems. 91% acrylic/5% nylon/3% polyester/1% elastane. Machine wash. Imported.Manufacturer style #: MHHSBF. 91% acrylic/5% nylon/3% polyester/1% elastane Nonslip grippers on the bottoms Tog rating of 2.34 Long pile cushioning keeps feet comfortable and supported Intensively brushed for softness Non-binding Diabetic-friendly