Coralite Extra Strength Menthol Heat Pain Relief Therapy Patch works on contact for cooling pain relief. Pain relieving ointment on a breathable adhesive pad. Contains natural menthol (5%) and contains vitamin E and aloe. It provides long-lasting soothing pain relief that lasts for hours, right where it hurts. It is thin enough to go unnoticed under clothes day or night. It is not messy or greasy and will not stain your clothing. Compare to the performance of Icy Hot Patch. 2 patches per pack.