1.【Cooling Material】Rayon derived from bamboo is usually smoother and 3 degrees cooler than cotton and is also thermo-regulating. Fibers made of rayon derived from bamboo are hollow and contain small gaps that promote ventilation, which enables the hot air to escape easily, keeping the pillow cool and dry while you forget all your worries and drift into sleep. 2.【Superior Quality】Our side sleeper pillowcase is made of rayon derived from bamboo-a luxurious fabric with similar properties to silk. It's the softest pillowcase you'll ever lay your head on. Because of our unique weaving technology, the fibers are long and thin, and the weave is also very strong, which makes the pillowcase stronger, thicker, more durable and less prone to tearing. 3.【Good for Your Hair】The pillowcase is silky soft and smooth, reduces facial creases and makes your hair less susceptible to damage, breakage, knots. Your hair will naturally slip and stay smooth all night. 4.【Hidden Zipper Closure】Our curved pillowcases are designed with hidden zipper closure and durable exquisite craftmanship with neat stitches to make the pillowcase hold your pillow perfectly without moving around. 5.【Easy to Care】 Machine wash cold with like colors. Zip the pillowcase up. Use only non-chlorine bleach if needed. Tumble dry low, and cool iron if needed.v Product Description: pure color silk pillowcaseMaterial: Polyester (Polyester)Color: White, royal blue, blackSize: 51x91cmPacking contents: 1* solid color silk pillowcase