Experience instant pain relief - The extra insulation keeps it cold and effective, to quickly reduce swelling and pain. Easy to use - These cold therapy ice packs for injuries do NOT need a freezer to become ice cold. All you have to do is squeeze the center of the flexible ice pack and it will instantly become as cold as regular ice. This effect will last long enough to reduce your swelling and inflammation. Suitable size - Disposable ice packs come in packs of 25, and they are 4"x 5.5" inches each. Thanks to their practical size, you can use these cold ice packs on any part of your body, including your ankle, elbow, head, neck, hip, foot, wrist, knee, calf and shoulder.