Injinji's lightest weight sock is built for all types of runs, on all kinds of surfaces. Their unique five-toe performance design eliminates the friction that can cause blisters, and keeps your toes free for better feel and natural fit on uneven terrain. Soft, durable seamless construction creates a supportive, secure fit, a mesh top and COOLMAX fibers help keep feet dry and cool, and a band under the arch provides support and stability. The no-show length rests below the ankle and features a heel tab to protect against chafing and keep your socks from sliding into your shoes. 200 Needle Count The more needles, the better. 200-needle-count socks are lightweight, sturdy and durable. Arch Support Supportive band that offers a secure and stable fit. Blister Prevention With each toe protected, skin-on-skin friction is completely eliminated protecting your foot from blisters and hot spots. Fiber Content Fiber content: 28% COOLMAX 67% Nylon 5% Lycra 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.