It's old, but usable (multiple available). JOINTEX Office Chair OA Chair C622R Product Specifications Economical "C622R" OA chair (without arms) / blue, with optional armrests. Features a large, stable back cushion and rocking function. Optional fixed armrest set (C3-LA) can be attached. When armrests are attached, the height to the armrests is 635-745mm. ● Seat height: 430-540mm ● Seat dimensions: W430 x D400mm ● Color: Blue ● Materials: Back/seat = acrylic fabric, cushion = urethane foam, legs = reinforced resin, casters = nylon dual-wheel casters ● Functions: Gas lift seat height adjustment, back rocking