Description: Indications: For walking or warming up in case of stammering, sprain, stiff neck, rheumatism. Dermatologically tested product. Practically reusable - works up to 1 hour. Perfect for athletes. How to use: Heat in water: Heat in boiling water for no more than 5 minutes. Remove from water and dry, then place in clothing pocket or wrap in a cloth to place on treated body area. Microwave: Heat in the microwave for no more than 1 minute. Remove from the oven and place in a clothing pocket or wrap in a cloth to place on the treated area of ​​the body. Chilling in the freezer: Place in the freezer for at least 2 hours. Take it out of the freezer and put it in the pocket of your clothing or wrap it in a cloth to place it on the treated area of ​​the body. Name of manufacturer and authorized representative: Medicinae Sp. zo Zbszyska street 3 91-342 ód, Poland WHATImportant information about the medical device This is a medical device. Use it according to the directions for use or the label. A medical device intended for self-monitoring - has the CE mark. It has an EU declaration of conformity. Includes user manual in Polish.