"Hiway Express Deluxe seat assembly offers a unique ride firmness control with a single shock, giving drivers a less fatiguing, more comfortable and therefore safer ride. U.S.A. Application Truck seat, Color Gray, Compatible With Item Number s 11788 and 11789, Dimensions W x D x H in. 28 x 22 x 46, Material Velour w/vinyl trim, Adjustable Yes. Gray velour and gray vinyl trim Adjustable lumbar support Contoured molded cushions 3-position tilt and air suspension with 10in. stroke on a universal mounting base 28in.L x 22in.W x 46in.H 15in. right armrest Item# 11788 sold separately 15in. left armrest Item# 11789"