At last really high end pillowcases that are easy to care for bed linen with such a high thread count is usually 100 cotton meaning it tends to crease in the wash but these housewife pillowcases are woven in 70 cotton with 30 polyester so they shouldnt need ironing the 1000 thread count is an amazing 1000 threads per square inchthe silky smooth fabric has a lovely satin pin stripe design for an impeccable finish