Outdoor Deep Seat Cushions for Patio Furniture Waterproof SetProduct Overview These outdoor deep seat cushions provide ergonomic comfort and sturdy support, ideal for patio furniture such as chairs, sofas, and porch swings. Their waterproof and fade resistant design ensures durability for year round outdoor use. Key Features High density foam core with waterproof PE backing and fade resistant polyester fabric Two reinforced straps on both seat and backrest cushions to prevent slipping and ensure a secure fit