SandPuppy Coolpad: Large size cold therapy pad for muscle inflammation, fatigue, and injury recovery. 3X more Cold Energy, 3X More Compression, 3X more Effective. SandPuppy Coolpad works great on large muscle groups such as quadriceps, hamstrings, and back. Optimized for cold therapy (4 -14 Deg C) for fast recovery. No cold burn . Unique strap mechanism. Stays firmly in place for effective recovery. Patented, thin Anti-freeze , and non-toxic Hydrogel formula for better body contact. Directions for use: Before using the coolpad, store the inner gel pouch in the freezer section of your refrigerator for at least 2 hours. Insert the pouch in the slit of the case. Wrap Coolpad on the affected area and strap it firmly in place with the Velcro extender. Can be used as a cold therapy belt or as a strap. 6 months manufacturer warranty.