Constructed to provide comfort and support even after miles of wear, the Ultra Run Crew features cushioned terry throughout the foot and toes, to help soften the impact of tough runs and workouts on feet. Each toe is separated, eliminating all skin-on-skin contact between toes and preventing blisters. The Ultra Run Crew, hitting at mid-calf, also features a ribbed knit throughout the leg for a tighter, more ergonomic fit. 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 therefore 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 It provides maximum breathability and ventilation on the top of foot. Protective Cushion Extra cushioning on the footbed to increase foot comfort. Fiber Content Fiber content: 29% CoolMax 68% Nylon 3% Lycra Padded Toes Extra cushion throughout the toes with midweight terry throughout the toes. Wash & Care Are your Injinji's dirty after a grueling run through the mud? It's time to wash them! To extend the life of your socks, Injinji recommends washing all of their socks on delicate with cold water, followed by line drying.