The bar stool set is crafted with water-resistant faux leather, electroplated steel, high-density foam, and sturdy plywood. It has a strong structure and an SGS-certified gas lift system that can support up to 136kg per stool. The 360° swivel barstool can be adjusted in height from 61-83cm, making it suitable for people of all ages and various tables. Just a simple installation is required. Yaheetech Upholstery: Black