Core Covers Outdoor/Indoor Sunbrella Pouf, 20" x 20", Fretwork Mist Made from Durable Sunbrella Performance Fabric and colored with highly UV stable pigments to keep colors brighter and longer Easy clean ability by using mild soap to clean most common stains; using bleach or solvents for tough stains will not affect umbrella fabric, but don't try this with other fabrics Easy zipper removable covers Sunbrella' s unmatched quality uses the finest raw materials, an ISO 9000 certified vertical manufacturing operation, on-site testing labs, and over forty-five years experience with performance fabrics Internal materials are 100% recycled high density foam given it more structural integrity over time