Go about your day with confidence and comfort. The Assert Office Chair comes with a sturdy nylon base and sleek ergonomic design, and features a breathable mesh back, passive lumbar support, padded mesh seat, and padded armrests that easily rotate up and out of the way. Complete with 360º swivel, a sturdy gas cylinder, one-touch height adjustment, five dual-wheel casters, and tilt tension control, Assert is a versatile modern task chair. Chair Weight Capacity: 331 lbs.