The Huggaroo hot/cold headache wrap is incredibly soft and luxurious. It is made of plush microfiber fabric and filled with heat-absorbing clay beads, flaxseeds, and selected herbs. It delivers moist heat to the scalp, temporal regions, and paranasal sinuses, melting away pain, tension, and stress. The wrap’s high mass and thoughtfully chosen ingredients result in class-leading heat retention and comfort. Optimally heated (please follow our detailed instructions for best results and safe use), the Huggaroo headache wrap stays hot for about 10-15 minutes and then warm for another 15-20 minutes. Subtle aromas of lavender, peppermint, lemongrass, and chamomile are released every time you heat the wrap, providing you with a soothing and refreshing aromatherapy. Alternatively, the wrap may be chilled in the freezer for a cool, refreshing experience. To use cold, put the wrap in a large ziplock bag and place in the freezer for at least 2 hours. Expect 8-10 minutes of cool therapy per freezing cycle. Please note that this wrap is primarily designed to provide moist heat therapy and subtle aromatherapy. Weight and size: 1.6 lbs, 28 x 6 inches. Composition: Soft and luxurious minky (100% polyester) fabric. Filled with clay beads, flaxseeds, and 100% natural dried herbs (lavender, peppermint, chamomile, and lemongrass).