The OfficeMaster WH80 synchronized knee-tilt chair comes from the new Wharton Premier series and was particularly designed to offer lower-back support. With a curved back shape, the WH80 backrest provides continual lower back support for small to medium sized users. Most exciting of all, the entire Wharton Collection now features the unbelievable sigh-producing comforts of Office Master’s exclusive Double Comfort Seating (DCS) Technology. This DCS Technology was specially developed by Office Master to provide simultaneous softness and support, all in the same amazing seat cushion. WH Value Series designed to accommodate users up to 300 pounds