Polyester [Package includes] Our outdoor pillows measure 18 x 18 inches. Package contains 2pcs of pillows only, INSERTS ARE NOT INCLUDED. [Material] These floral pillow cases are made of polyester fabric. It is waterproof and can be placed outdoors. [Excellent design] Our spring summer pillow covers use an extended invisible zipper. [Easy cleaning] Our outdoor pillow covers are made with an advanced printing process and can be machine-washed in cold water. [Good decoration] Decorative pillows, appropriate for bedroom, couch, sofa, office, patio, porch, etc, a must-have complement for indoor or outdoor use, housewarming gifts for a new home. Spring Summer Pillow Covers [Package includes] Our outdoor pillows measure 18 x 18 inches. Package contains 2pcs of pillows only, INSERTS ARE NOT INCLUDED. [Material] These floral pillow cases are made of polyester fabric. It is waterproof and can be placed outdoors. [Excellent design] Our spring summer pillow covers use an extended invisible zipper. [Easy cleaning] Our spring pillow covers are made with an advanced printing process and can be machine-washed in cold water. [Good decoration] Decorative pillows, appropriate for bedroom, couch, sofa, office, patio, porch, etc, a must-have complement for indoor or outdoor use, housewarming gifts for a new home.