RoadSofa™ SeatOur tall lumbar support and wide driver saddle supports the back and legs for superior comfort, while the streamlined nose improves the rider's reach to the ground Refined split-cushion design maximizes long-range comfort by separating the seating surface from the lumbar to reduce tailbone and back pressure GelCore™ in front and rear reduces tailbone pressure and increases circulation and comfort for both driver and passenger Designed and made in the USA 8" (20.32 cm) lumbar support.