The Rapid Relief Instant Hot Pack delivers soothing heat right away to help promote therapeutic healing where needed. Features* Temperature: Delivers approximately 49'C/120'F of hot therapy when activated at room temperature* FTP (fold-to-pop) technology, allowing the user to activate the hot pack simply by folding it in half* Tri-lingual packaging (English, Spanish and French)Application* INSTANT HOT THERAPY RELIEF:* Sore and stiff joints* Muscle aches and pain* Muscle tension and cramps