This M57 model is with a fluid and ergonomic all-mesh design, with adjustment of premium adjustment with 3D armrests, 2D Headrest, 2D Lumbar support
SIHOO® M57 Ergonomic Office Chair, Computer Desk Chair, 3D Adjustable High-Back, Breathable Skin-Friendly Mesh with Armrest, Lumbar Support (White)
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SIHOO® M57 Ergonomic Office Chair, Computer Desk Chair, 3D Adjustable High-Back, Breathable Skin-Friendly Mesh with Armrest, Lumbar Support (Grey)
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Sihoo M57 Ergonomic Office Chair - Black Mesh