Our seat cushions are made in America using high-quality materials including Sunbrella, Outdura, and Revolution performance fabrics. Covers are easy to clean, featuring durable and frustration free YKK brand zippers for easy removal. Our cushions are fade, stain, and mildew resistant, and for added peace of mind, carry a 5-year limited warranty. All cushions are sewn with PremoBond thread and seams are finished with overlock stitching for additional durability, reinforcement, and weather proofing to prevent fraying of fabric edges during machine washing. Inserts are made with CertiPUR-US® certified foam, produced without harmful chemicals such as formaldehyde, ozone depleters, PBDEs, TDCPP or TCEP flame retardants and are free of harmful materials such as mercury, lead, and other heavy metals. Foam is firm enough to avoid bottoming out but soft enough for comfort thanks to 2.5" inserts.