Copper Calf Compression Sleeve-1 PAIR of Sleeves to Enhance Circulation & Shin Splint Pain Relief - Experience Increased Performance & Accelerated Recovery, Running Marathons & Reduce Swelling 80% Copper-Nylon/ 20% Spandex Imported HIGHEST QUALITY MATERIAL - Our athletic sleeves are made a 80% Copper Nylon/ 20% Spandex blend of breathable material designed to provide the desired support without sacrificing a comfortable fit AND they come with a MONEY BACK GUARANTEE no questions asked. INCREASE PERFORMANCE & RECOVERY - Our compression sleeves stimulate blood flow & oxygen to muscles for better performance, while increasing the removal of waste products such as lactic acid to help reduce soreness during and after working out SPECIAL LIGHT WEIGHT MOISTURE WICKING FABRIC - Our graduated compression is specially designed to provide a firm comfortable fit with 18-22 mmHg from calf to ankle. VERY IMPORTANT - SEE SIZING CHART AND DIRECTIONS IN PHOTOS TO ENSURE PROPER SIZING AND CUSTOM FIT. WORK OR PLAY - Our compression sleeves benefit you whether you are an athlete working out for hours, a working professional standing on your feet all day like nurses or someone who remains immobile for long periods of time such as airline passengers. ADDED PROTECTION - C4 sleeves protect in many ways. Warm-up for that morning run, reduce leg cramps and fatigue from jarring muscle vibration for that marathon runner, provide warmth and scratch protection during that morning trail run, help nursing and other professionals prevent spider veins, can reduce the risk of blood clots in individuals with poor circulation. The list goes on and on.