Made of 60% copper ion infused rayon derived from bamboo & 40% rayon derived from bamboo, this cooling fabric breathes better than cotton and it is the perfect addition to any bed Unlike cotton pillowcases our copper and rayon derived from bamboo pillowcases have a smooth surface with very little friction. This can help reduce split ends, frizz and dryness, you can rest easy knwoing your hair will be soft and smotth upon waking up in the morning Our copper and rayon derived from bamboo fabric pillowcases are also temperature regulating unlike cotton which absorbs moisture, rayon derived from bamboo wicks aways moisture to keep you cool and dry all night long Machine wash in cold water and tumble dry in low heat Copper-infused technology is on the rise in bedding products. It feels luxuriously soft against the skin while promoting a healthy sleep environment. These pillowcases are hypoallergenic and eco-friendly! There is also preliminary evidence that copper pillowcases and sheets may promote skin rejuvenation and younger-looking skin. 100% Cotton sheet sets are no match for the feel and benefits of copper-infused bedding. You'll find these to be a great year-round pillowcase with its moisture-wicking properties and lightweight feel. Includes 1 pillowcase.