Sunnybay Adhesive Heat Patches For Neck, Knee, And Upper Or Lower, 15 Count COMFORTING WARMTH AT 113 F: Whether you?re looking for soreness relief products, neck strain solutions, or muscle cramp or joint stiffness alleviation, our adhesive pads deliver up to 113 F of mild heat to soothe your aches and discomfort. APPLY ADHESIVE SIDE TO CLOTHING, NOT DIRECTLY ON SKIN: No painful removal or sensitive skin reactions! Our heat pads for warmth are designed to strongly adhere to your clothing, saving you the trauma of ripping off bandages stuck to your skin. VERSATILE FOR SEVERAL CONDITIONS: By enhancing blood circulation and relaxing stiff joints and muscles wherever applied, you?ll get great results using our heat patches for discomfort, chronic musculoskeletal soreness, or any injury where heat is indicated for recovery. UP TO 12 HOURS OF RELIEF: Unlike conventional heat packs that quickly lose their warmth, each of our stick-on pads has a 12-hour life. Avoid usage while sleeping, and store half-used pads in an airtight bag to continue using the next day. NO LIMITATIONS, NO BULK: Our fuss-free adhesive pads are discreet and don?t limit movement, enabling effective soreness management on the go. Whether you?re undergoing period cramps or musculoskeletal issues, you can always multitask!