Here is a set of pro fins. They were a perfect fit to a size Eight and 1/2 foot. Please understand fin sizing and that they are like ice skates. If you wear a size 8.5 shoe these will fit!  They are stretchy and they can go a half size up or down for a good fit, but they were fitted to me in a dive shop. I wear a 8.5 shoe USA. No rips or tears anywhere. Quality made. No overseas junk here. Made to last! Rubber is soft and flexible. These will really propel you. Snorkeling is over for me, but I sure loved these! Now it's your turn. Enjoy!