Designed for the classic Bertoia Side Chair (1952), the replacement seat pads fit both the Bertoia chairs and stools. A thin layer of padding is upholstered in waterproof vinyl for use indoors and out. The Ingot Seat Pads are upholstered in Ingot fabric from Knoll Textiles. Ingot is a Greenguard-certified fabric, made entirely from recycled polyester. Its Nano-Tex finish builds stain resistance into the weave of the fabric - spills bead up and slide off without soaking in. The weave gives it the look of sheet metal, with durability to match. Manufactured by Knoll according to the original and exacting specifications of the designer. Made in Italy.