Jobst ActiveWear 15-20, 20-30, 30-40 mmHg Knee High Compression Socks Features: The ideal combination of therapeutic efficacy and Dri-release yarn for superior moisture control. Fits an active lifestyle with a seamless toe and 360degrees cushioned foot for increased wearing comfort. All-day comfort knee band that keeps socks up without binding or pinching. Reinforced heel resists abrasion and provides greater durability. Circumference measurements of the Ankle and Calf will determine correct size, see chart below for finding the best fit. Available Colors: Black, White. Description: The Jobst ActiveWear Knee High Compression Socks are effective leg therapy in an energizing athletic sock, ideal for various activities, from walking to playing sports. They are the ideal combination of therapeutic efficacy and Dri-release yarn for superior moisture control.