Hampton Bay Chili Stitch Ogee Outdoor Dining Chair Cushion Seat dimensions: 20 in. D x 21 in. W x 3.75 in. T Back dimensions: 24 in. D x 21 in. W x 3.75 in. T Durable, outdoor polyester fabric is UV treated to resist fading for vibrant, long-lasting color. Filled with a superior 100% poly-fill that helps cushion retain shape over time. Intricate geometric motif offers a designer touch.