Össur Cold Rush Therapy System Cold Rush’s holistic design features a durable motor, a strong flow rate and a very high ice to water ratio that ensures longer cooling times. Yet, it is whisper quiet and compact, weighing just 4.6 lbs (2.1 kilograms). By incorporating the same durable motor used in much larger mobile air conditioners and refrigerators, Cold Rush provides consistent cooling and excellent compression, even to high elevations. Quiet as a whisper. Cold Rush uses a brushless motor to produce a whisper-quiet (30 decibel) unit that allows patients to get the rest they need to properly rehabilitate from their injuries. Flow Control Knob Stay cooler, longer! A high ice-to-water ratio and a design that produces less heat transfer from the motor to the water combine to ensure cold therapy for up to 6 continuous hours. Cold Rush was designed holistically, with unique features like a locking lid to help prevent spills and insulated walls for improved cooling. Knee Pad INCLUDES A Knee PAD: For ease of use, the Cold Rush Therapy System comes with a soft pad and insulated long tubing. Designed to elevate the cold therapy experience to a new standard of fit and comfort. Ergonomically- Engineered to improve function, patient comfort and compliance. Pad Hose Coupling Each unit comes with a pad and insulated long tubing. Ergonomic pads mimics the body’s contours to provide localized treatment. Designed to elevate the cold therapy experience to a new standard of fit and comfort. Ergonomically- Engineered to improve function, patient comfort and compliance. Built-in Handle A built-in handle provides easy transport and a unique locking lid to prevent spills.