1. Envelope closure prevents hair entanglement or the pillow from sliding out. The pillow insert can be tucked in for a neater look, or left loose for a more casual look.2. Machine wash on cold with like colors. Use only non-chlorine bleach if necessary, tumble dry low and cool iron if needed. Please take the product out of the dryer immediately after drying to reduce wrinkles.3. These pillowcases will provide a better sleep for you and your family. Pilling resistance fabric, making your home more luxurious.4. Great gift idea for men and women, Moms and Dads, Valentine's - Mother's - Father's Day, Birthday and Christmas, New Years, Any festival or Daily.5. The fabric's color is matched with the invisible zipper for a seamless look. Also, easy to disassemble, and the fabric does not lose color.