The Zelos has been modified with straight handles bars fitted and wheels that can give 16 gears, although the original wheels are also include in the sale along with a brand new twist gear shift which would require fitting. the one twist gear shift has 3 settings although only two are used since the bike can be set up for 14 or 16 gears. Sometimes the gears can be a little temperamental ,although it rides good and is very lightweight. would suit a tall adult anyone between 5foot8 and 6foot 2 i would say. A bit of TLC would make this a really good bike. The bike has a nice colour cordination in black and blue.The original bike from Halfords was £300.