1. Large: Comfortable large heating pads (24 x 33 inches) can cover your neck, shoulders, backs, and waists, so that you can keep warm in cold days; high -necked design can cover your neck well. It effectively helps relieve soreness, stiffness and pain of spine, muscle and joints.2. Quick heating and safety: comfortable neck and shoulder electric heating pads quickly heated within 3 minutes, with 3 heating settings (100 -150 ) to meet your different needs; this back heating pad passes ETL through ETL Certification also has an overheating protection and automatic turnover timer function for 90 minutes, which is safe.3. High -quality flanges and water washing: The more comfortable surround heating pads are made of ultra -soft and luxurious flange flamboya, which allows this heating pad to exude heat more evenly, bringing a skin -friendly and comfortable experience. After removing the controller, the machine can be washed and hand -washed to keep it clean.4. Portable and fixed: This heating pad uses two bands, buckles and aggravated edges to be fixed on the back, neck and shoulder area. The hot pads are kept in place to keep your hands free. Whether you are in the office or at home, you can move freely and enjoy the warmth of soothing.