ThermaCare Arthritis HeatWraps, Knee & Elbow

All-day pain relief + reduced knee stiffness. Air-activated, one-time use. 12 Hours of heat: long-lasting relief for arthritis pain. Air-Activated: Just open pouch; starts to warm on its own. Ultra-Thin, comfortable, discreet, odorless. Ease-of-use commendation by Arthritis Foundation. Made in USA.