Convoy Series Semi-Truck Seats are for Highway Semi-Truck applications, with customized specific mounting for specific Tractor Trailer manufacturers such as Kenworth, Volvo, Peterbilt, International, Freightliner, Ford, GMC, and others. Convoy I, II, & III offer varying levels of comfort and convenience to suit you. All Models are available in Cloth, Vinyl, or Leather Upholstery.