Very small people and very tall people are the biggest challenges, from a bio-mechanic point of view. The small proportions of Jhinuk - with a 59cm saddle height - dictated the use of 650c wheels. People are often mistrustful of smaller wheels, but this necessity became a virtue on this bike project. The result is proportionally just right… and also a beautiful, made to measure road bike that fits like a glove and rides perfectly. Made to measure frame, carbon 650c fork Real Design Signature HP 1-1/8". Shimano Tiagra groupset, Vittoria tyres and Deda finishing kit. Selle Italia Novus Boost saddle. The 650c wheels are hand-built by Arup Sen with Miche hubs, Sapim spokes, Kinlin rims.