Opening and folding in seconds with no tools, each of these 28 inch stools collapses to 2.5 inches thick and carries by a built-in handle. A honeycomb HDPE seat spreads weight evenly and stays waterproof and stain-resistant through picnics, camping trips and BBQs. Powder-coated steel in an X-shaped layout with non-slip foot pads supports 330 pounds and keeps the stool from wobbling on soft ground.