PACKAGE INCLUDE: 1 Body size pillowcases (20"x54") (Pillows are not included.) Made from washed cotton. Envelope Closure pillowcase，so there is no zipper, and it's very easy to put in or take out the pillow. Machine wash cold, gentle cycle, tumble dry at low temperature, cool iron if needed. Do not bleach. Made of cotton, it is not easy to make your hair static, so that you are more comfortable. Microfiber bedding feels clammy, cheap and clingy and makes my hair staicky. There's no pont in a decent pillow if it feels cheap and uncomfortable to touch. This is absolutely perfect. A real cotton feel but still soft. A bit rougher than cotton flannel but softer than undyed linen in my opinion. Stays on even though I toss and turn. Also I've noticed less hair breakage and no static in the morning compared with microfiber. Sleeps really cool/ambient temperature in comparison to things like flannel or jersey.