ProCare® Knee Immobilizer, Large, 1 Each Jobst Ultrasheer 15 20 Pntyhse Closed cell black composite material 2 8002 055 Closed cell black composite material so the roller is easy to clean PUMP * The Flowtron HydrovenTM intermittent pneumatic compression (IPC) system provides clinically effective non invasive dynamic compression to the limbs to treat a wide variety of vascular and lymphatic conditions including 1) venous ulceration 2) dependent and traumatic edema and 3) chronic venous insufficiency * Can be used with Hydroven Inserts * Easy tubing connection for simple set up * The Flowtron Hydroven FPR System has been ergonomically designed for efficient use in many different situations from the clinic to the home * The controls indicators and connectors are simple to use and can be accessed with ease * Power: 110 120V AC 60Hz * Size: 10 Comfortable large is for 19 – 22 inch circumference (measure thigh 4 inches above patella)