Using this ergonomic kneeling office chair is easy. First, adjust the seat height to a comfortable level using the pneumatic adjustment lever. Sit on the padded seat and place your knees gently on the knee rest. This will help you maintain a proper posture. When moving around, use the dual - wheel casters to roll smoothly. As for maintenance, regularly vacuum the black fabric upholstery to keep it clean. Avoid exposing the chair to sharp objects that could tear the fabric. Also, don't put excessive weight on the chair beyond its capacity. If the chair has any parts that seem loose, tighten them up right away. This will ensure the chair lasts a long time and keeps providing you with comfortable seating.