Nautilus Designs Aztec Designer High Back Mesh Synchronous Executive Office Chair With Headrest and Multi-Adjustable Arms Black - BCM/H222/BK DDOur deluxe and commanding high back ergonomic mesh chair, complete with adjustable headrest, mesh back and seat, offers a wire controlled mechanism, independent seat slide for maximum user comfort, synchronous knee tilt mechanism with tension control for individual bodyweight, height adjustable multi position 'T' shaped armrests, a heavy duty gas lift 154kgs (25 stone) for easy seat height adjustment and a complementing polished aluminium base. with a