PRODUCT DESCRIPTION: The Incrediwear Trek Socks relieve aches and fatigue for those spending long hours on their feet. Their comfortable design provides a cushioned feel while retaining breathability to ensure all-day comfort. Although they were originally designed for outdoor activities, they are enjoyed by active people everywhere. SIZING: Based on shoe size. Size down if you're at the lower end of a size range. S M L XL MEN4 - 6.5 MEN7 - 9.5 MEN10 - 12.5 MEN13 - 17 WOMEN 5 - 7.5 WOMEN8 - 10.5 WOMEN11 - 13 WOMEN13.5 - 16 EUR35 - 38 EUR39 - 42 EUR43 - 46 EUR47 - 50 TECHNOLOGY AND SPECS: Incrediwear’s signature fabric blend is embedded with semiconductor elements to provide effortless comfort and exceptional durability Effortless comfort 3D Weave Breathable Toe Box Additional Arch Support Strategically placed mesh for optimal cooling Wash and Care Instructions: The Incrediwear Trek Socks are easy to clean. Wash warm or cold. Tumble dry low. Do not bleach, iron or dry clean.