EXTRAORDINARY COOLING TECHNOLOGY: This cooling pillowcase contains the magic material mica. The quilt is added to the natural mica element during the drawing process. It is a sheet-like structure with tens of times more thermal conductivity than nylon and polyester. At the same room temperature, normal sheet is close to 71.96?H, while the cold feeling is only 60?H. It can absorb body heat and reduce body surface temperature by 1-2 degrees at the moment of touchYour new Pillowcases are tested thoroughly to ensure the utmost safety and comfort. If the body sweats, the sheet can quickly absorb moisture, the whole sheet becomes cooler. At the same time, its specific heat capacity is large, it can maintain a cold feeling for a long time, and it is no problem to be cool all night.Delicate and smooth Silky soft, most comfortable and luxurious pillowcase you can find. Best for any room in your house – bedroom, guest room, kids?? room, RV, vacation home. Great gift idea for men and women, Moms and Dads, Valentine’s – Mother’s – Father’s Day and Christmas. EASY CARE – Fade, stain, shrink and wrinkle resistant. Machine wash in cold. Dries quick on tumble dry low. More durable than cotton.2 Pack Luxury Pillowcase: Size 20??x30??, 2 pc of pillowcases? 100% SATISFACTION GUARANTEE – FRESHMINT products are backed by stellar customer service. We are dedicated to ensuring you have an excellent experience; Plus, all of our blankets come with a 3-Year No Questions Asked Warranty. If you are at all unsatisfied with your product, please contact us (through Amazon if past the standard return window) and we will be happy to assist you. At the end of the day we want our customers to be happy!