Jobst For Men 15 20 Knee Hi Black Medium (pair) Wheelchairs Accessories Intermittent pneumatic compression DVT pump Otoscope Accessory Intermittent pneumatic compression DVT pump * Preset pressure no adjustment * Power on indicator light * Self sealing snap lock connectors * Alternate inflation (second garment inflates 15 sec Aspirator pump on blue base stand with carry handle * Adjustable suction from 0 22 Hg * Disposable collection jar has 800cc capacity * Overflow cutoff and hydrophobic filter to protect the aspirator pump 115V 60mHz 2 Knee High (Closed Toe) * Classic Black * 15 20 mmHg * Medium * Ankle Circumference 8 1 2 9 1 2 * Calf Circumference 12 17 * * Attractive ribbed design with 3 D knit structure * Easy to wear with a comfortable band that keeps socks up without binding * Flat toes seams and a roomy toe section * Reinforced heels for a longer lasting durable product * Anti bacterial additive reduces unpleasant sock odor * Special Moisture Transport System with soft micro and multi fiber yarns in the sole keeps feet dryer * Latex Free * Color: classic black