Amazon.com: Mrzneaoch Porch Swing Cushion with Backrest and Ties 3 Seat Swing Cushion Replacement Thicken 4" Outdoor Swing Cushions for Outdoor Cushions for Patio Furniture (59.1 * 39.4 * 3.94inch) : Patio, Lawn & Garden
4 Foot Bench/Porch Swing/Glider Outdoor Cushion - 2 Inches, Seat and B – Float In Air
Swing Replacement Cushion, Outside Bench Cushion with Backrest, 2-3 Seater Cushion with 8 Ties for Outdoor Furniture, 59 x 39 x 4 Inches Porch Swing Cushion Garden Bench - Walmart.com