POLYWOOD® Bench Seat Cushion - 17.25"D x 68.5"W x 2.5"H - XPWS0049
56 X 19 Solid Color Tufted Bench Cushion, Seat Cushion, Natural, Navy Blue, Grey, Black, Red, Stone, Brown, White - Etsy
Pillow Perfect Outdoor/Indoor Lemon Tree Yellow 56" Blown Bench 18-in x 56-in Yellow Patio Bench Cushion in the Patio Furniture Cushions department at Lowes.com