The enamelled glass top is made by fusing glass with enamel at high temperature, creating a highly scratch, UV and temperature resistant top. The tables tops are also hygienic and very easy to clean, with almost zero water absorption making them frost and weather proof. Although dirt cannot penetrate the enamelled glass surface, we do recommended cleaning the surface in order to prevent the build-up of grease and contaminants with warm water and mild detergents. A thin layer of WD40 can be applied with a dry cloth, which can also alleviate any blemishes.