Kids Boys Girls Heat Holder Thermal 2.3 tog Socks 10-1 us Black 91% Acrylic 5% Nylon 3% Polyester 1% Elastane Imported machine wash Advanced Insulating Yarn - High performance insulation against cold with superior moisture wicking abilities. Long Looped Thermal Pile  Innovative knitting technology produces our unique, extra long looped cushion pile to hold in warm air, increasing the thermal Tog rating. Soft Brushed Inner  Finally, an intense brushing process maximises the amount of warm air held inside the sock for all day warmth and comfort. Keep feet warm, protected and supported in a pair of Heat Holders socks for kids. With a massive tog rating of 2.34, these seriously chunky socks are made with a specifically developed extra heavy bulk yarn with extreme thermal qualities. Heat Holders - Best seller since 2010, providing a wide range of winter thermal products that we provide in the sock snob online amazon store