00% Egyptian Cotton (Flat Sheet), 98% Egyptian Cotton (Fitted Sheet, Long Staple Cotton) TEMPUR-Luxe Egyptian, 400-thread-count long staple Egyptian cotton sheets offer a soft, silky feel, giving every bed a crisp, smooth look. MOISTURE-WICKING: Long staple cotton, moisture-wicking keeps you cool and comfortable while you sleep. FOUR-WAY SRETCH: Four-way stretch ensures the sheet maintains its shape over time, providing the ultimate fit and a smooth finish over your mattress. BREATHABLE: Breathability helps promote a more comfortable sleep environment. FOUR COLOR OPTIONS: Choose from White, Sandstone, Sleepy Blue, Silver Mist, or Cool Gray.