Kao MegRhythm Good Night Steam Patch - Made in Japan This is an amazing product for men and women who experience of neck pain, tense shoulder, always tired, tresses, sitting in one position for hours at work, or cannot sleep well at night. This heated patch releases muscle tense, help deep sleep at night time and wake up next morning with more energy. Very light lavender fragrant. You will love this product. How to use: put the patch on your back between the shoulder and neck area before go to bed. Remove the patch next morning.