The On and On collection is offered in a variety of seat materials, for different settings and purposes. The rPET seat versions – matching the chair and stool frames – are available in six crisp, timeless colors suitable for both indoor and outdoor spaces. Plywood seats in ash, oak or walnut, and upholstered seats, offer a different appeal for interiors. The stools are available in two heights – bar stool height and counter height. Chairs with rPET or plywood seats stack 7 high, and chairs with upholstered seats stack 6 high.