Heavy-duty vinyl with long-life nylon thread. 3in. thick back and seat cushions over heavy-gauge steel pan. Welded corners. Bolt pattern is 9in. x 14in.. Glider tracks adjust 3 3/4in. to 11 1/4in. laterally to fit most forklifts and other equipment. Seat dimensions: 18 1/2in.W(A) x 15in.D(B) x 17in.H(C).