4cm high density foam Without electric welding joint the aluminum frame and legs Working weight / Static weight: 220/750KGS Round corners, PU handle. Accessories: Face hole Open: 185x60x(43-63)cm Packing: 95X62X19cm Fold: 93X66X17cm N. W/G. W: 13.4/15.7KGS 20GP/40HC: 240/520PCS 3 years warranty for frame