FEATURES: Menthol Infused: Provides a cooling sensation for exceptional relief Copper-Infused higher performance knit Advanced Compression delivers maximum support Seamless, breathable knit design minimizes discomfort Reinforced band reduces potential slippage when wearing for a consistent fit SIZING INFORMATION: HOW TO MEASURE : Measure the circumference around the top of the ankle. You may need to adjust the sleeve a few inches up or down to get the desired compression or comfort. S/M : 8'' - 10'' (Inches around ankle) L/XL : 10'' - 12'' (Inches around ankle)