I ordered these fins, as I have used it for snorkeling in Egypt, so rather weak strain in contrast to the proper diving in strong currents or the like. Positive so far is that the sizing charts good fit with my foot size and the fins a good grip offered without the rubber bands to have to take excessive. The bad surprise came at the first practice. After about 15 minutes in water, the use of the lateral support Gummizugbänder is broken at one of the fins! What certainly was not because I had you too tight, or the like. Of course that was extremely annoying on the first day on holiday to throw his new fins for a short time in the barrel.
Conclusion: Unfortunately, I can only advise against it every buy these fins, because your purpose can not comply with minimum stress and you have only annoyed for money is spent.