Jobst For Men 30 40 Knee Hi Black Medium (pair) Specialty Scales The charging case has a Autoclavable Up to 325 The charging case has a built in 300mAH battery which means it charges quickly and powerfully Get up to 80 Hours of Time on 1 Battery durable heel area Knee High (Closed Toe) * Classic Black * 30 40 mmHg * Medium * Ankle Circumerence 8 1 2 9 1 2 * Calf Circumference 12 17 * Stylish leg therapy that feels great and helps manage pain and discomfort from: Tired aching legs mild to severe leg ankle and foot swelling minor to sever varicosities post surgical post sclerotherapy and help preventing a recurrence of venous ulcerations * features & benefits: * Number 1 physician recommended brand * Available in 5 colors and a large foot size * Fashionable ribbed designed dress sock * Smooth toe seam