Juzo Silver knee highs are anti-microbial, anit-odor, anti-static and surface cooling. They are recommended for: Wound Care - aids in the treatment of venous stasis ulcers and other skin wounds by impeding bacterial growth and keeping the area cool. Burn Scar Treatment - eliminates harmful bacteria and keeps area cool. Lymphedema - helps reduce risk of skin infections, common with lymphedema. Made in the USA of 23% silver, 27% elasthan, and 50% polyamide. Available in regular or short lengths (15.75" from floor to bend of knee) with an open or closed toe.