Como Series Features and Benefits: Premium comfort back features contoured plywood with flexible lumbar support High strength, lightweight aluminum banquet stacking chair Leg on Leg stack chair, stacks 12 high COMFORTweb seat features flexible stretchband support padded with 2-1/4'' of luxurious COMFORTmode foam Silhouette style back Easy glide smooth, clear butyrate glides Many different upholsteries and frame finishes available to choose from Optional Hand Hold Available for Chair Back Minimum purchase of 2 required. Warranty 12-year structural frame warranty