Cura-Heat\nDirect to SkinAcute Back Pain ReliefMax Size2 Heat Patches\nCura-Heat's penetrating heat action lasts for 8 hours and once removed the pain relief can continue to a further 8 hours, resulting in up to 16 hours pain relief.Cura-Heat Direct to skin ACUTE Back Pain MAX SIZE can be applied directly to the skin for those who prefer direct skin application heat therapy.Cura-Heat Acute Back Pain Max Size are twice the size of regular Cura-Heat Back Pain and cover a larger area of the lower back making them more suitable for people who desire warming relief over a larger area and may suffer from severe back pain.Simply open the sacket and apply directly to the skin over the painful area where the heat radiates through to the source of pain - decreasing stiffness, improving mobility and relaxing tense / aching muscles.Non-medicinal, fragrance-free, and with a thin and discreet design, Cura-Heat Direct To Skin ACUTE Back Pain MAX SIZE provides a convenient way to manage your acute b.