ossur cold rush compact therapy machine system with knee pad- ergonomic, adjustable wrap pad included- quiet, lightweight and strong cryotherapy freeze kit pump ossur cold rush compact is convenient, quiet and easy-to-use, delivering cold therapy when and where you need it. the single flow setting, and easy fill instructions make this motorized device perfect for use in the clinical setting, or home. the compact unit is whisper quiet and lightweight, weighing just 3.35 lbs. 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. 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. stay cooler, longer! cold rush was designed holistically, with unique features like a locking lid to help prevent spills and insulated walls for improved cooling and plug and play single flow setting.