Handy 18 Inch Lightweight Stackable Black Stool with Matching Cushion, Great for Kids, Office, Classroom, Kitchen, Home Stool is stackable so you can keep several on hand; coordinating cushion is machine washable for easy care and has an anti-slip backing Materials: Stool frame is durable steel, seat is plastic (polypropylene) and cushion is 100% cotton fabric with 100% polyurethane filling Measurements: stool seat diameter is 12.5 inches, cushion is 13 inches diameter by 1 inch thick, stool height is 17.75 inches, stool width is 15.75 inches, holds up to 220 pounds Requires assembly (less than 5 minutes); instructions included