Eurosock ski and board socks are specifically designed for winter athletes. Every style is engineered with technical sport-specific features with patented fibers developed through years of research. Eurosock uses elastic layers that work perfectly together to stimulate blood flow improving oxygen delivery to your muscles reducing foot and leg swelling, lactic acid production and cramping. 80% Micro supreme, 15% Nylon, 5% Elastane Lycra. FEATURES A playful sock that fits the ski and snowboard spirit and fun, cheerfulness and energy while providing warmth comfort and support. Dynamic cushioning creates high performance protection to the foot and shin against the rigidity of ski and snow board boots. Made with Micro Supreme exclusive fibers, provides superior wicking and self-drying capabilities that keep feet dry and warm. Eurosocks, advanced technology exclusive material and superior craftsmanship weaved together to create the highest quality of socks you will ever wear. Sizechart Eurosock 2016 Due to the stretchability of the sock, if your shoe size is between sizes, choose the smaller. xxxxs 7-10 xxxs 10-13 xxs 13-2 xs 2-5