A medical device that adheres directly to the neck, shoulders, waist, or abdomen to provide warmth. The soothing steam penetrates deeply to promote blood circulation, relieving stubborn shoulder and back pain. Comfortable temperature of about 40°C lasts for 5-8 hours. Gentle on the skin and does not wet clothing. Odorless for easy use outside. Activates gastrointestinal function when applied to the abdomen.
