The Gibo/Kodama C3300AT-V557-01 Stamina 3000 Series Class 100 Cleanroom Mid-Bench Height Chair is made for cleanroom applications and has autonomous controls with seat and back angle adjustments. It has a contour seat and standard back that are made from a grade 1 vinyl material, which is heavy-duty and fire retardant. It also features chrome hood dual wheel casters and a 28″ diameter polished aluminum base with 20″ diameter adjustable footring for operator comfort.