Wellsoon Cold Therapy System is a specialized cold therapy device designed for knee recovery after surgery, swelling reduction, injuries, and sprains. Product Feature: - The programmable timer provides seven levels of time adjustment (10/20/30/40/50/60 minutes and alway-on), allowing you to freely combine different operating time and rest time according to your doctor's advice for better post-surgical or post-injury recovery. - Three levels of adjustable flow rate (50%/75%/100%) allows you to adjust temperature without having to change the ice water. - Larger universal pad and straps allow it to be used all over the body. - Very queit and never disturbs your sleep. - Portability design gives you the freedom to choose location of use. - Good insulation design make it work long-lasting. - Warranty period: one-year replacement Notion?Before being released from the factory, every single product undergoes rigorous quality checks. Some of our products undergo water testing to ensure their integrity and proper functioning. However, this may result in trace amounts of moisture being present in the bucket of the product you receive.We want to assure you that this moisture is harmless. Notion: Please use clean water. Be aware that hair or fibers in the water may be inhaled by the pump. They cause the pump to stop running. When you encounter this problem, you can refer to this link ( https://twitter.com/robin23232/status/1738450775611756619 ) to repair it by youself or contact us to replace it. The product inculde and Size: - Cold Therapy Machine x 1: 10" x 9" x 10.5", 6 pounds, Foam-insulated Tubing : 57" - Universal Pad x 1: 12.5" x 11" - Elastic Strap x 3: 4" x 45", 4" x 27", 4" x 15" - Power adpater x 1 - Product User Manual x 1 Use demonstration: https://youtu.be/CEC6Q1MtiXA If you have any questions or use problems, please contact us.