Designed by Ross Lovegrove, the Sprite Stacking Chair is inspired by elements from the natural world, reshaped into futuristic forms. Generous seat and inherent lumbar support provide long lasting comfort. Unupholstered Arm and Armless chairs stack eight to ten high. Upholstered Arm and Armless chairs stack four to six high. Arms available in wood or black urethane pads. Chrome base. Overall Dimensions: W 22", D 22", H 22", Seat Height 17". See Knoll website for seating options. GREENGUARD Certification