For tired muscles nothing feels better than a warm massage and the heart shaped body massager is a great Valentine's Day gift! Easy to use, just bend the metal disc inside the body massager to activate heat source. The massager will heat up to 129 degrees F (54 degrees C). Test on small area of the body for comfort prior to full application. Glide smoothly over desired area of body for a warm, sensual body massage. To reuse, just re-heat in boiling water for 7-10 minutes or until crystals re-liquefy. Use non-piercing tongs to carefully remove heated body massager from water and allow to cool to a comfortable temperature suitable for body contact. Do not heat in microwave. Pair with a favorite massage oil or lotion.