... ,weatherproofing,rotproofness. Swivel&lift. Office Chair With Wheel Product features1.material Stainless steel material,with high temperature proof,weather proof,rot proof ... crafts Certificate guaranteesALSO products could be combined metal structure parts with different cushion,such as bamboo,leather,fabric,cloth ,plastic ... Best Regards! #201/#304 swivel & lift stainlee steel office chair with wheel