In an effort to support the Tibetan fight for freedom and raise funding for the Students for a Free Tibet, SockGuy is honored to make the Free Tibet Baselayers and socks. 20% of the proceeds from your purchase will go to the Students for a Free Tibet.org Made with 75% Ultra-wicking Micro Denier Acrylic, 15% Nylon, and 10% Spandex for exceptional comfort and strength. ALL of the socks feature "Stretch-to-Fit" sizing system and exclusive "Easy-fit" cuff for a PERFECT FIT every time on any foot. These features create superior softness and comfort and help eliminate blisters and hot spots. SockGuy also feature a double stitched heel & toe for added strength and durability, and they deliver Superior Quality and High-Tech Comfort in every SockGuy sock they make.