This sandbox is large enough for several children. 5,000 pounds of sand are required for a proper level of fill. A cover, ground barrier, four corner seats, and a bench seat is included. The sandbox features high-density polyethylene with UV stabilizers, an easy to install interlocking design, and a 10-year limited warranty. Additional seating and umbrellas are available for purchase separately. This sandbox will accept an additional 3 bench seats.