Tufted Square Outdoor Chair Cushion, 3"Hx20"Wx20"D, SEASIDE SEVILLE SUNBRELLA 3"H. Choose 18" or 20" square. Seaside Seville Sunbrella Our No Hassle Return policy gives you peace of mind to enjoy the purchase in your home for up to 45 days. This item qualifies for free-shipping on Amazon.com! Free Shipping promotion ends May 5!