This coffee table is made of high-quality materials. The main advantage is the extremely durable and elegantly presented top made of tempered glass with a thickness of up to 8 mm. In order to ensure maximum stability, the top is additionally placed on massive silicone pads that prevent it from sliding. Elegance flowing from the table gives the interior a chic and modern character. In turn, the shimmering base perfectly harmonizes with the transparency of the top creating a unique whole. The black marks on the glossy parts are remnants of polishing paste used to achieve the shine. To remove the dirt use a microfiber cloth and a gentle detergent. Slight bends in the metal structure are not a defect but rather a characteristic that occurs during the welding process. Metro Lane