Crafted around an ergonomic mid-back mesh design with thoughtful lumbar support, this mid-back mesh office chair combines a sponge-filled waterfall seat with a contoured backrest, curved armrests, a tension adjustment handle, a lift-up-and-down lever, a premium gas cylinder, a sturdy 5-point base, and smooth universal PU casters, hosting one comfortable ergonomic computer chair for home offices, gaming setups, or study spaces. The breathable mesh backrest keeps airflow circulating during long sitting sessions, the sponge-filled waterfall seat reduces pressure on hips while promoting better leg blood circulation, and the lumbar support helps reduce lower back strain during daily work. The user-friendly tension adjustment handle lets users tune the resistance, the lift-up-and-down lever customizes the seat height, and the premium gas cylinder ensures smooth and reliable height changes. The sturdy 5-point base provides dependable stability, the smooth universal PU casters glide effortlessly across floor types without scuffing, and the curved armrests offer ergonomic support for arms and shoulders. Assembly is required with the included instructions guiding the build for daily comfort across the workday. Color: Black mesh and black frame.