About this item Breathable Mid-back Design: Featuring densely knitted mesh backrest, this mesh office chair allows better airflow, accelerating heat and moisture dissipation. Mid-back design supports your spine's natural curve and protects your lower and middle back as it prompts you to sit straight. Larger Seat for Optimal Comfort: In this model, we upgraded the seat size, measuring 52.5cm/20.7 (width) by 51cm/20 (depth), and 7cm/2.8 thick, to provide you with a softer and larger sitting area. Reclining Office Chair: By simply pushing the lever or pulling it out, this mesh office chair can be tilted and leaned backward or locked in place for your various sitting positions. A tilt tension control knob under the seat is equipped to adjust the recline angle. Robust Chair Construction: This mid-back office chair is constructed of hard-wearing nylon mesh, durable star base, solid rolling casters and SGS-certified gas cylinder. It has passed BIFMA X5.1 Test and is recommended for office use