Love these. They run a little larger than the other ones I have, which are another version of aqualung fins, so I might have to wear my boot/water shoes with them in order to prevent the rubbing on the top of my foot where it fits in the shoe for longer water times. I was replacing my other pair which are too tight on the same part. I guess I am in between sizes, LOL... The adjustable straps are great. Lots of power with each stroke! I can wear them diving or snorkeling. I really love these and am glad I spent the extra money for them. Other than the rub on the top of my foot, they are super comfortable. They arrived on time and in perfect condition.Took them on my last dive trip used for 16 days and they were great. Worked superb in current and no current. Just make sure you adjust the tension straps before your dive. Not very fun doing it under water lol.These fins worked very well for me. They are very simple to get on and off. Spent five days snorkeling with Humpback whales and did a lot of swimming to keep up, these fins were fantastic, no calf cramps and no rubbing as long as I started with aqua socks underneath the fins. I also took them with me on a few dives and they performed great. My new favorite fin!Great fins with lots of effortless kicking power, however they are a little heavy and bulky to travel with.do not function quite as smoothly as my split fins but definitely can get some good thrust out of them when needed.Best Fins I have ever owned! The only thing that could make them better is if they were fully automated.Ugh, I can't understand why anyone buys these fins, especially for the price. You would think that the fancy spring loaded hinges is for some special propulsion purpose but in reality I get hardly no propulsion out of these fins AT ALL. I buy the cheap full boot fins and they work better than these. I truly don't understand why people buy these finsGot these for Scuba Diving. Easy on and off. I use them with boots.