Kirkey's 45 Series Road Race Containment seat is the seat designed for added safety and comfort at a price the racer can afford. The head and shoulder restraints were engineered symmetrically to offer unobstructed peripheral vision. These seats accommodate all head and neck restraint systems as well as 6 point seat belts. The deluxe 45EXT Land Speed Series Seats offer an extended head restraint in order for the 45 series seat to be legal for all land speed sanctioning bodies. The head restraint uses SFI 45.2 rated high density energy absorbing padding and is vertically adjustable. Available in 15 inch, 16 inch, 17 inch and 18 inch hip widths. This 45EXT land speed series 18 degree layback seat is designed for Drag and Road Racing.