Quiet and calm, Cast Slate's neutral charcoal resembles the cool, damp rocks that line a hidden pond in the middle of a forest. It's a tone that is deep and sophisticated, yet has a warmth that radiates out and upward, allowing you to pair it with all colors easily. These 18 x 20 in. outdoor seat pads are covered in durable and beautiful Sunbrella acrylic fabric, specially engineered with UV protection to resist the elements and maintain bright color season after season. Inside our outdoor cushions we use our patented 100% everLuxe polyester fiber fill to help retain shape and provide long-lasting comfort during outdoor use. Fibers within the cushion are oriented in a vertical position, which provides structure, support, and spring. These outdoor seat pads were designed to be compatible with the Oak Cliff furniture set but they also fit many standard outdoor chair frames with square seats. Each cushion comes with ties to ensure it stays securely in place no matter the weather. Our outdoor seat pads also come with a 5-year limited fabric warranty and a 1-year limited warranty against defects in workmanship. Transform your backyard into the outdoor sanctuary of your dreams with Home Decorators Collection Cast Slate Seat Pads.