My local LBS uses Voler for their kit, and at least in race fit, I find they fit very similar in size to most other brands. Small in Voler, small in Le Col, Santini, Castelli, etc. I haven’t bought a jersey in a couple years, so if things have changed disregard, but I have historically found Voler jerseys to not be quite as stretchy or tight (for race fit) as as other brands. I haven’t found this to be a problem necessarily, but just something to note.