Ok so I stuffed up the size!
Ok so I stuffed up the size. They were just slightly too small. The fabric and cut is fine. Nothing misrepresented. Delivery to New Zealand was fine although I went with expedited shipping as DHL to NZ is brilliant. Anyway, I reached out to the company and they worked with me on a solution even though it was my mistake. That's the kind of customer service I guess you want from an on line store. My new shirts are on the way! I probably would recommend erring on the side of going a size up if you are a reasonably solid bloke. Otherwise a positive experiance.