window seat bench- designed using a tall IKEA LACK shelf and two 2 CAPITA leg kits. flip the shelf on it's side.... the cushion is made by cutting a camping mattress foam in half and sewing a custom cover. the camping mattress should be 2.5 to 3 inches. add batting around it to soften the edges.The yellow bench fabric is Taza Tarika in yellow by Dena Designs. Also check out the gray.