Rest easy with the cooling comfort of Mainstays Comfort Chill Microfiber sheets and pillowcases. These super soft queen-sized sheets are woven with copper ions that regulate your body temperature throughout the night. They?ll help keep you cool as you sleep and feeling refreshed when you wake. These copper-infused fibers provide an additional antimicrobial benefit which inhibits the accumulation of allergens dust and bacteria that cause odors and illness. These sheets are designed for your overall wellbeing. Made with high quality workmanship and durable polyester microfiber you will love the comfort and feel of these sheets? night after night.