Decorative Pillows Throw Pillows Pillow Covers 18 Inch Square Cover Waverly Lunar Sky Cotton Envelope back and knife edge. FLAT SHIPPING! THE MORE YOU BUY THE MORE YOU SAVE! Also available with removable pillow insert. Cotton 18 x 18 square. Fabric by the yard also available. Made in USA by Decorative Things. Affordable home decor with decorator style.