Building a city commuter as a single or three speed? That is exactly what the Beatrix was designed for. Because of it's slightly lower bottom bracket and longer wheel base, it’s the perfect frame for a commuter. Makes a great single speed, fixed gear, or 3 speed internal bike with it's 120mm rear facing dropouts. Braze-ons for front and rear racks and fenders as well as larger tire clearance make it a great choice for all year riding!