Machine Washable : This standard size pillowcase set of 2 measures 20" x 26". Cold Water Machine wash with similar colors, No bleach; Tumble dry low, and cool iron if needed. We recommend that you buy more than 2 sets, one can be used when another is cleaning. Temperature Regulating: These bamboo rayon pillowcases have tiny gaps in the fabric, helping to wickway sweat. pillow cases allow air to circulate through the pillowcase all night long, even in hot weather. Perfect for hot sleepers & night sweats. Dedicated Customer Service provides 365 DAY return and replacement service & lifetime free customer service on all brand hotel collection pillowcases sets. If you have any questions, please feel free to contact us. Cooling Pillowcases pillow cases are made of bamboo rayon fiber, moisturewicking, absorbing moisture from your skin doesn't make you feel stuffy, keep you Cooling and Dry All Night, even in hot weather. Good for Your Hair: If you're one of those people with curly, wavy, damaged, or textured hair, you know that battling frizz is real. The smoothness and moistureretaining effects of rayon made from bamboo pillowcases will help your hair glide over it to reduce tension and pulling at night. Unlike cotton, which tends to absorb some moisture from skin and hair, rayon made from bamboo fabrics do not absorb the moisture from your hair or skin in this way.