This Therma Moist Heating Pad by Drive Medical is ideal in the treatment of arthritis, back pain, sprains and strains, muscle soreness, neck pain, headaches and sports related injuries. It comes with a positioning strap with Velcro-type closure to ensure a secure, proper fit for maximum treatment. The outer, flannel cover draws the airs humidity and retains it, releasing the moisture once the pad warms directly onto the treated are. The moist heat therapy is more effective than dry heat because moisture transmits heat more efficient than air, providing soothing relief every time you use it.