Razer Naga Trinity Gaming Mouse – 16,000 DPI Optical Sensor – Interchangeable Side Plate w/ 2, 7, 12 Button…

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Ergonomic design: The sturdy metal frame design helps to improve the comfortable sitting position and keep comfortable after long work or work. Thicker backrests and seats take this chair to the next level
Quality materials: smooth bonded leather, added seat cushions, and lumbar and headrests provide extra support and comfort. Heavy-duty base and nylon smooth rollers for excellent stability and mobility

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Diamond cut design: rhomboid lines. Ergonomic chair back: fits the lumbar spine
Increased headrest design: cervical spine is more comfortable, 6cm thicker pillow surface, more flexible