This ergonomic chair offers excellent comfort with adjustable backrest and high cost-performance ratio, making it ideal for prolonged office work, study sessions, or home use. Core Comfort Design Adaptive lumbar support Equipped with an adjustable lumbar support that allows vertical/forward/backward movement, it precisely conforms to the physiological curvature of the lumbar spine, disperses lumbar pressure, and reduces the risk of soreness during prolonged sitting. The mesh waist support features elastic breathability, preventing sweat retention while providing robust support. Breathable mesh backrest Made of high-elasticity gray mesh fabric with excellent breathability, ensuring comfort even during prolonged sitting in summer without causing heat discomfort. The material also features superior elasticity to conform to the natural contours of the back. The S-shaped biomimetic backrest design provides segmented support from the shoulders to the waist, alleviating spinal pressure. Thick and comfortable seat cushion High-density sponge, breathable fabric, provides soft and enveloping seating comfort without collapsing during prolonged sitting. The curvature design conforms to the hip line, dispersing sciatic pressure and enhancing comfort during prolonged sitting. Multidimensional adjustment function Headrest: Adjustable in height/angle for neck support and cervical spine relaxation, suitable for napping or reclining relaxation. Armrest: Soft padding material with adjustable height, designed to fit the arm and reduce shoulder fatigue. Seat height: Adjustable via pneumatic rod to accommodate individuals of varying heights, ensuring stable foot placement. Rearward Locking Function: The chair backrest can be reclined to a locked position, ensuring comfortable posture for both work and short breaks. 360° rotation: Nylon five-star feet, silent roller, smooth movement, and non-scratch flooring. Appearance and Material Color scheme: White frame with gray mesh/grey base, featuring a fresh and minimalist design suitable for modern office and home environments. Frame: Made of high-strength nylon material, lightweight and durable with strong load-bearing capacity. Safety: Certified with air pressure rod safety standards for enhanced user confidence. applicable scene Sedentary office work Home Learning / Esports Long-term reading and writing in the study The population with a height of 155-185 cm is generally suitable for this configuration.