Normally, I’m around a 44 chest, so ordered a 44/46” as I wanted the jersey to be loose to fit a bit of body armour under on big days, however, on delivery it came up a bit too loose, so returned it for a 42/44” which is perfect. So consider that these requirements are factored in when sizing.
DFYRS is fast becoming my favourite bike clothing brand, super quality, great designs and a great company to deal with in terms of purchasing/returns, communications, etc. Definitely will be back for more...