Heat Holders women's No1 Thermal Socks Long Ski Gray/purple 5-9 Us 91% Acrylic 5% Nylon 3% Polyester 1% Elastane machine washable Thick, chunky and with a massive tog rating of 2.34 for warmth -5-9 us The extra long, thickly padded sock is ideal for skiers and all winter activities Brushed inside to hold heat within without sweating - Long Knee length Ideal inside ski boots and for anyone who works outside in cold temperatures An ideal Gift- Women's and children's versions in my Amazon shop