Two U-shaped double riveted cross braces. Features 18-gauge 7/8' round tubular frame. Designed for indoor or outdoor events-inverted rear leg U-brace prevents sinking into ground. Double hinges on each side for added stability and durability. Color coordinated polypropylene glides and V-tip plugs for added stability. Powder-coated frame. Color impregnated plastic seat and back. Tested by Bureau Veritas to support 500 lbs static load capacity.