I wanted a Tribord Easybreathe snorkel mask but was not sure which size I needed. As I live over an hour away from your nearest store, I phoned Reading before I left home. I was told that help would be available to get the right size and that they had plenty of each size available in store to try. When I got to the store, the assistant told me that they only had one medium mask in stock and no other sizes at all. After measuring and trials I decided the medium size was probably OK. It would have been nice to have tried other sizes to confirm this. Had this one not fitted, you would have only had one star after being given wrong information and travelling all that way for nothing.