The patented Hyperice technology is based on the principle of combining cold and compression technology. This combination is significantly more effective than the use of cold alone. The cold compression is created by two-part system that works perfectly together: The ice cell of the bandage is perfectly placed and fixed in the desired position by vacuum technology - via a valve through which the air inside can be removed. The compression sleeve made of high-quality neoprene provides close contact and firm pressure between the ice cell and the body area, while protecting the skin from hypothermia. The ice cell can be filled with ordinary ice, crushed ice or small chunks of ice work best. No additional water needs to be added. We recommend the use of Hyperice Fuel as a coolant. The Hyperice Utility can be used on the ankle, elbow and shin or wrist. Product Details Compression sleeve 3mm premium compression neoprene Special construction allows high freedom of movement during use Optimal compression with comfortable fit Can also be used on shin and ankle Machine washable Product Details Ice Cell Maximum compression through vacuum venting valve Fast and controlled cold transfer through neoprene lining Flexible cell lining optimally adapts to the body contour Antibacterial shell/lining Easy to fill Built-in seal prevents leakage