Safty during use Do not stand on this chair. Do not use this chair as a step ladder. Use this product only for seating one person at a time. At least every 4 months, check all bolts, screws and knobs, to be sure they are tight. Do not use this chair unless all bolts,screws and knobs are firmly secured. If parts are missing, broken or damaged or worn, stop use of this product until repairs are made & using factory authorized parts.