Renegade Knuckle Solo SeatSaddleGel™ reduces tailbone pressure and increases circulation and comfort for the rider Wide saddle supports the back and legs for superior comfort, while the tapered front improves the rider's reach to the ground Carefully designed contours hug the bike’s frame and offer maximum comfort Ready to accept optional drivers backrest (sold separately) which has independent adjustments for fore-aft position, height and angle, and folds forward Designed and made in the USA 4-1/2" (11.43 cm) lumbar support.