Sold as 1 Each. Promotes good posture and helps burn additional calories throughout the day. IncludesAdjustable-height base,Worksurface with integrated cupholder,Tablet slot and pencil tray,Backpack hook,Four dual casters (two locking),Hand-brake system. Minimum worksurface height = 33.3' (85 cm); maximum worksurface height = 49.3' (125 cm). Warranty: Ten (10) years; warranty does not cover product abuse, modification and failure to adhere to product instructions, improper operations and/or misuse. Designed to ANSI/BIFMA X5.5-2008 standards. Optional Storage Bin: Holds class supplies (not included with desk, order separately-order Staples IM1ZY1276). No tools required for assembly.