Designed to treat pain from bad posture. It is also recommended for the treatment of traumatic and inflammatory injuries, such as torticollis, muscle spasms, and sports injuries. Ideal for stress relief. INSTRUCTIONS: COLD: Place the product in the refrigerator, using its plastic bag or one similar, until it gets to the desired temperature. Place on the body area it has been designed for and apply for 15-20 minutes. HOT: Place in the microwave wrapped in a damp cloth. (check Watts power) Heat and use with caution to not burn yourself. CAUTION: For sensitive skin, it is recommended to place a cotton towel between the gel pack and your skin. Do not use directly on open wounds. Do not use on people who cannot sense, or express discomfort to the temperature of the product. If you experience any discomfort while using this product, please discontinue use.