Likely going to order this Havana jacket in a 44L soon. I find it odd that they don't provide a lot of information on the cloth used and that the measurements provided don't include the shoulder. Free returns and exchanges are nice, but it would save a lot of problems if the company gave all the measurements needed to guess a proper fit.
I recently recieved a Havana and returned it becuase it was too tight,especially at the arms. Havana is the slimmest fit jacket so I would suggest going up a size.