Ossur Cold Rush Cold Therapy Machine Buy Online at the best price. Introducing Cold Rush – the reliable cold therapy unit that provides long-lasting pain relief. With its durable motor, whisper-quiet operation, and industry-leading ice-to-water ratio, you can rest easy knowing that you’re in good hands. Plus, its unique design features like a locking lid and insulated walls keep you safe and cool. Try Cold Rush today and experience the benefits of cold therapy like never before.