Restore muscles to a relaxed, healthy state with deep, penetrating heat. Used by doctors and therapists, MediBeads® provide clean, moist heat therapy at home by absorbing moisture from the air. Microwave in minutes for therapeutic-level heat that lasts up to 30 minutes, or freeze for cold therapy. Ideal for relieving aches and pains caused by stress, fatigue, prolonged static activities and more. Beads stay odor- and mold-free. King pad 16"L x 1"W x 12"H. Hand wash.