Nautical Pillows Beach Pillows Throw Pillows Decorative Nautical Decor 18 Inch with Insert Blue Fish Cotton One decorative pillow with removable pillow insert. Also available as a pillow cover without pillow insert. Pillow fabric is treated for outdoor use. 100% polyester. Polyester 18 x 18 square pillow. Fabric by the yard also available. Use these throw pillows for decorative pillows on couch or sofa indoors or as patio cushions. Made in USA by Decorative Things.