VeloKicks sizing is inline with many major brands. As a comparative tool, sizing is on par with Specialized, Bont, etc. A 44 in S-Works will fit the same as a 44 VeloKicks. If in doubt, go with what Euro sizing you presently run in your shoes.
Both models of VeloKicks have been designed around a upper with generous volume, so half sizes are presently not available. The initial range is from 39 to 46, however if you're a size outside of this range please email us at email@example.com if enough demand for any particular size exists we will be able to consider the costs of additional moulds.