A cushion made of compressed polyester. Performs better than foam. 1 form per bag except for size 17 x 15 x 1 in* washable will not turn yellow non-allergenic retains permanent shape resists mildew dries quickly odor free ideal for deck furniture Chair cushions Upholstery Camping Bumper Pads Boat and recreational vehicles fire retardant * The following sizes contain 2 per bag: 15″ x 17″ x 1″ (38 x 43 x 2.5 cm)