This 6 foot aluminum park bench without back is made of 2 3/8" O.D. galvanized tube with 1 1/16" cross brace and portable frame. The seat is made of a light weight, durable 2x10 anodized aluminum plank. This portable bench can be used indoors or outdoors for sporting events such as football or basketball games. Our athletic aluminum benches can be used in parks, schools, or on the sidelines for players.