Mid-Back Mesh Office Chair Ergonomic Computer Chair with Lumbar Support-BlackBreathable mesh fabric keeps you cool and comfortable during long sitting sessions Sponge filled comfort seat provides soft cushioning to reduce pressure on your hips Waterfall seat design promotes better blood circulation in your legs Contoured backrest supports the natural curve of your spine for better posture Lumbar support reduces lower back strain and enhances overall comfort Curved armrests offer ergonomic support for your arms and shoulders