This dining table and chair set features a table with a 0.47 inch thick rock plate tabletop. The top layer rock plate is supported by a multi layer solid wood board beneath, prolonging its lifespan and protecting the rock plate. The table corners are rounded for safety. The aluminum alloy base resists oxidation.The chair seats are filled with high density rebound sponge, rebounding efficiently and rarely collapsing, and the chair legs are made of carbon steel, ensuring sturdiness and durability