This 6 foot bench with 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 and back is made of 2x10 planks of recycled plastic reinforced with steel ribs. 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.