IZO Home Goods Upholstery Foam  2 inch X16 X 16 Pillow Form and Foam Replacement Seat Cushion Foam, Set of 4 Perfect for a variety of home and craft projects Ideal for Mattresses Padding, Furniture and Bedding Support, Art & Craft Projects Density: 1.20 , Compression Rate: 30 LB (Firmness) , Resilience = Low Soft Foam is suggested for occasional to medium use for longevity foam piece If used for outside seat cushion , bring in and store when not use.