Get the most productive work from your employees with this set of 4 multifunctional swivel office chairs. These chair come fully loaded to help you take charge of your organization. With a ventilated mesh back, users iwill have air circulating to their backs to maintain comfort. Make room for these modern beauties and upgrade everyone's chair in the office giving them a customized seating experience. Adjustable back height knob adjusts 2" up and down - Back angle paddle locks in multiple positions - Tilt control paddle locks in multiple positions - Curved back with substantial lumbar support - Contour padded swivel seat will keep you in comfort - Adjustable height arms provide relief to neck and shoulders - Get supportive ergonomic chairs that can keep up with long 8 to 10 hour shifts with ease.