This 6 foot bench without back is made of 2 3/8 inch O.D. galvanized tube with 1 1/16 inch cross brace and portable leg style to allow for mobility. The seat is made of a light weight, durable 2x10 anodized aluminum plank. To guard against up ending or tipping, end overhang is only 6 inch. These benches are perfect for indoor or outdoor use. Great for parks, locker rooms, ball diamonds, soccer fields, etc.