BluHeat Neck & Shoulder Pain Relief Patches provide immediate, all-natural pain relief and are activated by air. These heat therapy patches are created to instantly relieve neck and shoulder pain by activating natural heat. Simple apply the patch to clean, dry skin after removing the paper backing, and allow it to sit there for 5 to 10 minutes to reach the ideal temperature. Enjoy constant heat therapy for more than 4 hours, which will help you relax your muscles and alleviate your pain. The patches are secured firmly in place by the adhesive backing, enabling you to go about your daily routine without difficulty. These patches are a convenient and adaptable option for on-the-go pain relief because they are odorless, discreet, and mess-free, unlike conventional hot water bags or ointments.