This gaming chair is expertly engineered for big and tall users, boasting a 1.6-inch taller backrest and 1.5-inch wider seat cushion than the 6658 model to ensure full thigh support, natural 90° knee alignment and a 26.97"-29.92" adjustable seat height for stable foot placement, paired with extended lumbar support that gently cradles the spine for an optimal seated position. Its seat cushion integrates pocket springs and shaped foam to deliver sofa-like elasticity and comfort, evenly distributing pressure for enhanced ergonomic ride comfort, while the highly breathable mesh surface fabric offers excellent heat dissipation to keep users cool and well-supported, boosting work efficiency with its superior resilience. Crafted with premium materials, the chair features an upgraded steel plate fixation for the backrest that can withstand over 300lbs of impact, and it comes with abundant yet easy-to-use functions including a 90°-145° recline, a matching footrest for gaming, working and napping, plus an adjustable headrest that can be positioned at the backrest’s hollow or top to fit different heights perfectly.