The Greendale Home Fashions Outdoor Seat/Back Combination Chair Cushion will add both comfort and style to your outdoor furniture. Each cushion measures 38 x 21 x 4 inches and is overstuffed with a soft polyester fill made from 100% recycled post-consumer plastic bottles for added comfort strength and durability. It s exterior shell is made from a 100% polyester UV-resistant outdoor fabric. Circle tacks create secure compartments which prevent cushion fill from shifting while string ties secure cushions to outdoor furniture. A variety of colors and prints are available to enhance your outdoor decor.