Amazon.com: Honeycomb Indoor/Outdoor Beryl Pacific Blue Quilted Chair Cushion Set, Seat and Back, Weather Resistant, Stylish, and Comfortable Patio Cushions, Seat: 17" x 17" x 1.5"; Back: 17" x 18" x 1.5" :
Sunbrella Outdoor Cushions 18-in x 20-in Canvas Black Patio Chair Cushion in the Patio Furniture Cushions department at Lowes.com
Amazon.com: Joyside Outdoor Chair Cushions 17 in. x 18.5 in. Patio Seat Cushions Seat Pad with Ties, Purple (4-Pack) : Patio, Lawn & Garden
Wildon Home® Outdoor Sunbrella Seat Cushion 19.5'' W x 19.5'' D & Reviews | Wayfair
Deluxe Sunbrella Tapered Chair Cushion with ties 19" front/17" back x 18" x 3" | Plow & Hearth
Amazon.com: Honeycomb Indoor/Outdoor Cabana Stripe Blue and White Quilted Chair Cushion Set, Seat and Back, Weather Resistant, Stylish, Comfortable Cushions, Seat: 17" x 17" x 1.5"; Back: 17" x 18" x 1.5" :
Cushion Perfect 17 x 18 in. Sunbrella Outdoor Cushion For Chairs – ThePorchSwingCompany.com
Red 17 x 15.5 Outdoor Chair Seat Cushions For Patio Furniture Set Of 2 Clearance | eBay