Jobst Ultrasheer 30 40 Knee Hi Natural X Large (pair) Oxygen Masks Pump Airflow 4 LPM * geri chairs Pump Airflow 4 LPM * Pump Cycle Time 5 Minutes * Pump Type Compressor * Weight Capacity 300 lbs * 130 individual bubble cells for maximum comfort and effectiveness * Quiet pump alternately inflates and deflates the air cells * 4 LPM (liters per minute) pump produces consistent air flow and pressure over a 5 minute cycle time * Variable pressure setting on deluxe pump allows comfort setting for maximum comfort and compliance * Durable heavy gauge premium vinyl bubble pad provides superior therapeutic treatment * Built in bracket for mounting easily to bed * Warranty 1 Year Pump 90 Day Pad 2 Channel Electrotherapy * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 Knee Hi * Natural * 30 40 mmHg * X Large * Ankle Circ 11 1 2 13 Calf Circumference 13 3 8 19 5 8 * Beautifully sheer hosiery Durable long lasting * Sandalfoot styling * Gradient compression for relief and prevention of venous disease * Therapeutically effective sheer lightweight and fashionable *