In the UK you can wear 2" side racing/training speedos in most public pools, The lifeguards are recruited from lifesaving/guarding sections of swimming clubs where they will have trained and raced in speedos, square-cuts and jammers. So long as your swim suit is not less than 2" at the side, doesn't have a massive obvious pouch, isn't cut away to show your bum cheeks and isn't blatantly see through, and you spend your time swimming and not posing you'll be welcome anywhere.
|