These Tempur-Pedic Luxe Egyptian Sheets in Sleepy Blue, Eastern King are made from long staple cotton with moisture-wicking that keeps you cool and comfortable while you sleep. The breathability of this sheet set helps promote a more comfortable sleep environment, while the four-way stretch ensures the sheet maintains its shape over time and provides the best fit for your mattress. Product Details: • 400-thread-count • 2% elastane fitted sheet • 100% cotton flat sheet