Kiln-dried hardwood frame has double doweled, mitered joint construction. Sinuous steel spring suspension. Tension controlled center tilt mechanism for rock-back option. Adjustable height with gas lift. Steal reinforced, swiveling five-spoke wood base has casters for easy maneuvering. Double "X" carvings accent the reverse side of this classic barrel back desk chair. Seat has tension controlled center tilt mechanism for rock-back option, and seat height adjusts with standard gas lift.Patton Desk Chair Features: . . . . . Made in the USA .