Schwinn Solitaire medium size cruiser 21 speed aluminum bike for sale. Bike is very light weight and appears to be brand new. On holiday, she rode it about 6 or 8 times. That is everything there is to it. Front forks and seat that withstand shock. Seat is easily adjustable. The gears are easy, with three ranges on one side and seven on the other. has a carrier at the back.