[Real Effects] After using the Pain patches for some time, I noticed a slight increase in temperature at the patch site and more relaxation of the muscles. The patches effectively penetrate deep into the muscle where discomfort is localized and can provide relief for up to 12 hours. [Safe and Comfortable] The breathable nonwoven fabric won't cause discomfort from heat buildup when applied to the body. [Ancient Remedies Health Patch] Our patches for relieving shoulder, neck, waist, and leg pain offer the ideal solution. [How to Use] Simply wash the affected area with warm water, remove the protective film, and apply the self-adhesive bandage to the painful area. [Applicable People] Suitable for drivers, sedentary office workers, and elderly individuals experiencing back pain.