... , covered with polyurethane foam, well-shaped, high flex.Solid wood frame, imported elastic webbing spring system, high density whole piece ... warranty 2)Frame: commercial grade made of kiln-dried solid wood in a 5-year warranty.3)Spring: no-sag sinuous spring ... defect, lifetime consultation available on problems occurred. Packing Wrapped in water resistant EPE foam, then padded with hard carton on ...