Wrinkle Free 500-Thread-Count Cal King Sheet Set, Silver Sage Everything you love about 100 percent cotton sheets--except the wrinkling 500-thread-count sheet set for California King beds includes flat sheet, fitted sheet, and two King-sized pillowcases Will remain wrinkle-free for up to 50 washes All-around elastic fitted sheet fits mattresses up to 18 inches deep Machine wash and tumble dry for easy care