Ignition 2.0 ReActiv Low-Back Task Stool, 22.88" to 31.75" Seat Height, Elysian Seat, Charcoal Back, Black BaseReActiv mesh back design delivers total zonal comfort with the perfect balance of the right type and right amount of support. Unique, back cushion style lumbar support is height adjustable: up and down, to provide personalized support and extra relief where you need it. Synchro tilt mechanism with seat slider offers a full range of reclining positions. Tilt tension controls the rate and ease of recline. Upright tilt lock secures the chair in the full