Arden Selections Outdoor Deep Seat Cushion Set, Water Repellant, Fade Resistant, Deep Seat Bottom and Back Cushion for Chair, Sofa, and Couch, 24 x 24, Simone Black Tropical - Walmart.com
RSH Décor Indoor Outdoor Deep Seating Cushion Set, 26”x 30”x5” and 26”x20" | eBay
George Oliver Array Deep Seating Indoor/Outdoor Sunbrella Seat/Back Cushion | Wayfair
Deep Seating Chair Cushion: 24" x 27"
Source Waterproof Resistant Outdoor Patio For Furniture Cushions Replacement Garden Chair Deep Seat Blue Customation Cushions Covers on m.alibaba.com