Sihoo M57 seat designed with ARC-SHAPED to help in release thigh muslce and maintain comfort during long hours seating


Breathable
-Deisnged with full mesh to ensure when you have long sitting with our chair you will not feel hot.
skin-friendly mesh type
-High quality mesh, you will not feel like the mesh is scratching your skin
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Sihoo M57 armrest is adjustable for front and back 7cm
Up and Down 7cm
Rotatable 36 degree
To ensure customer safety all our ergonomic chair was certified by SGS and BIFMA, quality are guaranteed.


Sihoo certified Aitsulab Enterprise is as a reseller of Shenzhen Yuantuntongda Trading Co.Ltd.
Fabric
- The whole chair is made of PE+polyester special mesh, which has bright colors and does not fade, strong tensile resistance, abrasion resistance, non-toxic, decay resistance, chemical resistance, oil resistance, high temperature resistance and UV resistance, and strong air permeability. Features such as long service life.
Headrest
- made of PP+ fiber material, the headrest can be rotated 45°, and the lifting function can be adjusted.
Backrest
- made of PP+ fiber material, S-shaped spine frame, fits the curve of the spine, fully supports the back, and makes sitting and reclining more comfortable.
Waist
- Made of PP+ fiber material, the waist pillow is wrapped with thick sponge, giving the waist a stronger top waist strength.
Armrest
- armrest frame is made of electroplated Q235 steel + PA material, and the 3D PU material armrest surface can be adjusted up and down in 5 gears, and can be adjusted back and forth and rotated left and right at the same time.
Seat Cushion
- seat cushion is made of PP+ fiber, which is sturdy and durable.
Mechanism
- cold-rolled mechanical tension spring, mechanical steel multi-function thickened explosion-proof mechanism, adjustable lifting, adjustable back tightness, three-speed back adjustment.
Gas Spring
- mainly made of steel, passed the American BIFMA test, three-level air pressure rod, 100mm lifting stroke sinking 40mm.
Chair Leg
- 350 aluminum alloy feet, passed the American BIFMA test.
Caster
- Silent non-slip large-side PU chair wheels, smooth and dull chair leg edges, handy, silent, scratch-resistant floor.
