This deep seating cushion is made from Sunbrella fabric. The filling is faom. This cushion has two pieces. The seat size is 24 x 24 x 5.75". The back size is 25 x 22.5 x 6.5" with piping. This cushion will fit most larger size chairs, and sofas. This deep seating cushion is made from Sunbrella fabric. The best fabric under the sun. The colors stay strong and vibrant, even through intense sunlight exposure. It passes 2,200 UV hours. This cushion resists mildew. It is easy to clean, and it is fast drying.