The Run Original Weight fiber construction protects each toe and the entire foot from blisters, hotspots and moisture build-up. Feet will remain cool during runs and workouts with a mesh top for maximum breathability and superior arch support for a secure and stable fit. The no-show length rests below most footwear lines and has a tab feature to protect your heel from shoe irritation. To extend the life of your socks, we recommend washing all Injinji socks on delicate with cold water, followed by line drying. Features & Benefits Blister Prevention With each toe protected, skin-on-skin friction is completely eliminated protecting your foot from blisters and hot spots. Moisture Management Each toe is wrapped in sweat-wicking material so your foot will be drier and therfore more comfortable than in traditional socks. Total Foot Utilization When your toes are separated and properly aligned, this allows your entire foot to be engaged in any athletic activity. Mesh Top Provides maximum breathability and ventilation on the top of foot. Fiber Content Fiber content: 29% COOLMAX® 68% Nylon 3% Lycra®