The brompton m3l 2017 folding bike is the original folding bike using bromptons m type handlebar the m type is bromptons first and original handlebar a 3 speed bsr hub the brompton standard range hub is an updated version of the original sturmey archer hub used on their very first bikes bromptons are as simple and user friendly as they come using their patented folding mechanism no folding bike can fold as fast and as compact as a brompton can the m3l comes equip with brompton mudguar