Roho Agility Max Contour Back System w Air & Lumbar Pad Hip Chairs 25 Base Depth: 20 High absorption capacity 25 Base Depth: 20 * 360 Degree Lamp Adjustment Backside is 10 * Warranty: Back Shell & Hardware: 36 Month Limited Warranty * Air Insert: 18 Month Limited Warranty Cover & Foam: 18 Month Limited Warranty Includes:Back Shell Back Shell Hardware Back Cane Hardware Cover Foam Pad Air Insert Lateral Air Inserts Foam Insert Dual Wrench Lumbar Support Pad (select models) Repair Kit Hand Pump Product Registration Card Quick Set Up Guide and Operation Manual * Construction: Back Shell: Aluminum Back Shell Hardware: Zytel© with an aluminum Sliding Height Adjustment Bar Back Cane Hardware: Bracket and pins are aluminum * Pivoting Cane Band and Adjustment Cylinder are steel * Cover: Front side is 100% polyester