The microfiber bed sheets from the etérea Comfort Series are made from 100% polyester. They feature a strong all-around elastic and fit perfectly and wrinkle-free on your mattress due to their optimal cut. The high-quality fine polyester yarn gives the bed sheet a soft and skin-friendly surface. This microfiber fitted sheet provides you with a pleasant and restful sleep. The fitted sheets are sanforized, offering additional protection against shrinking and stretching. All etérea fitted sheets are produced in a colorfast and gentle manner and can be washed and dried in the machine.