Gel ice pack hot - cold \ \ polyethylene bags with gel, with the possibility of alternating hot or cold application \ \ hot application: \ \ \ indicated for back pain, stiff neck, rheumatism, hypothermia and whenever a hot pack application is required. \ the bag can be converted to hot in two ways. \ by immersing it in hot water for about a minute (at 80 degrees Celsius maximum). \ by placing the bag in a microwave oven for a period of 25 seconds at 600 watts. \ the gel is distributed evenly in the bag. \ to place the hot pack, it must first be wiped dry if it was immersed in hot water and then wrapped in the special case included in the package before being placed on the skin (this applies to both cases of immersion or microwave preparation). \ \ \ cold application: \ \ \ indicated for hematomas, sprains, injuries and in general where cryotherapy is recommended. \ the pack can be converted to cold by placing it in the freezer for approximately 1 hour. \ to place the cold pack, it must first be wrapped in a case or cloth before being placed on the skin. \ \ \ dimensions: 13.5cm x 25cm \