Breathable mesh keeps this ergonomic office chair cool through full workdays while adjustable support tailors the fit. The backrest reclines from 90 to 115 degrees with 1.2 inches of lumbar adjustment, and a 2D headrest shifts 4 inches in height and rotates 60 degrees. Flip-up armrests fold flat to save desk space, a wide sponge-padded seat cushions the sit, and a premium gas lift over a five-claw base supports up to 350 lbs.