Product Description The chair takes Ergonomic Design. The chair botton: power coated steel frame. The type can be the optional choice. The chair is designed without sharp edges. Design, fabrication, and finish are in high quality to assure durability Specifications 1.Chair surface material: PU polyurethane foam 2.Chassis features: adjus back leans /adjust back up and down /adjust cushion tilting back 3.Pedal ring: Φ 510 mm, the high quality cold-rolled steel plate, adopting steel clamping technology, surface plating/ coating 4.Chair foot: Φ 600 mm/aluminum alloy die-casting molding, surface polishing 5.Casters: PA nylon casters 6.Antistatic version: system resistance 10 e4 - e9 Ω