“Never purchased water shoes before?? Recently went on a cruise to Jamaica....I purchased a waterfall climbing excursion...knew sandals were gonna be a problem....Thank God I bought these! They really came in handy...they never slipped off even when I was entirely in the water....I followed what the other commentators said about buying it a half size smaller...so I did exactly that...was a perfect fit! Would purchase again if I need another pair! Only downside really was some bigger size pebbles will get stuck on the bottom...a little annoying but nothing that would really notice...until you take them off.”