HON Nucleus seating is constructed from innovative materials to deliver comfort from the inside out. This chair also features a four-way stretch knit back that conforms to your spine. The synchro-tilt and four-position locking further promote proper back alignment. Height- and width-adjustable arms are standard for added comfort. Attractive and comfortable task chair for your office or home. Back is made of breathable four-way stretch knit upholstered seat features NRAM stretch material with over-molded foam for exceptional comfort. Expressive visual design is rooted in advanced ergonomic science. Overall dimensions: 45. 25"H x 28. 75"W x 25. 75"D. Seat dimensions: 20"W x 19"D. Back dimensions: 19"W. Height (7"-11"H) and width (17"-20"W) adjustable arms provide additional comfort. Synchro-tilt mechanism reclines the back at a higher ratio than the seat for proper back alignment, letting you control the rate and ease of recline. Weight capacity: up to 300 lbs. Assembly required. Upholstery features Nano-Tex soil- and stain-repellant technology. Seat glide adjustment moves the seat cushion forward or back to adapt to upper leg length. Multiposition tilt lock secures the chair at one of the several preset reclining angles. Pneumatic seat height adjustment moves the seat up and down to adapt to various body heights. 360-degree swivel provides freedom of movement in any direction. Utilizes innovative materials and processes that advance the science of office chair design. Model Option: HNR1KD. Y2. STC. A. H. IM. CU10. BL. SB. T.