Material: 100% grade A velvet. very soft thick and environmental. Size: 2 pcs 18×18 inch /45x45cm pillow covers without inserts. Please allow 1~2cm deviation because of hand-cutting and sewing. Due to the production process, pillow covers in different light intensity and angle, the surface will produce plush silver reflective, so that the products exhibit different colors, this is a normal phenomenon, and not the product quality problems. Hidden Zipper: You do have to fold the pillow in half to safely insert it, as long as you squish your pillow to put in so you don’t cause strain on the zipper, and the zipper could keep fine. WASHING: (separately from other articles) Machine Wash Cold Separately, Gently Cycle Only, No Bleach, Tumble Dry Low.