"This seat cushion brings a layer of comfort and a refreshed look to your outdoor lounge chair. Its square silhouette features piped edges for a tailored appearance, while two integrated ties keep the piece securely in place. It is upholstered in Sunbrella fabric® for a soft-toned fabric feel that stands up to the elements and frequent use. The foam fill provides a supportive seat for relaxing on a patio or deck. We also love that the removable cover features a zipper closure for easy maintenance.