Thick 8 Layer Bent Plywood Seat With Hpl Finish 4 Fully Welded 12 Gauge Under-Seat Support Brackets heavy Duty Bumpers For Safe And Secure Stackability durable Non-Marring Polypropylene Glides weight Capacity Exceeds 500 Lbs plywood Core Is Made With Poplar Wood And Eucalyptus Wood 7/8 16 Gauge Chromed Steel Tubing