Make sure to buy a size larger than the one you wear. They are hard to put on and take off. They are not soft and do not fit the foot well, and they are completely stiff. I consider them expensive for their quality. I am not sure I will get used to them. I think I made a bad purchase buying them online.

While it is good in terms of size, the material of the fin is particularly hard and hinders the natural movement of the foot. I struggled quite a bit while swimming.

Very good application on the feet. They help a lot in swimming, you can't develop the same speed as the larger sizes but they train the feet better. Also, when you wear them, they go on and off comfortably on beaches with stones, which doesn't happen with larger-sized flippers.

Small but very good. Of course, they don't have the speed and results of the big ones, but they are easily transportable and easy to wear, and they are convenient

It is good, good construction, but for me at least, let me explain... it doesn't allow the foot to go up (it goes difficultly), resulting in my feet going down. It is good for the beach but not for workouts.

Good construction, convenient size and weight for transportation, maybe the purchase of one size larger than normal is needed, that is, for someone who wears size 43 shoes to get size 44 - 45.

Very good quality material with good fit and easy to carry. Ideal for beaches with pebbles/rocks

Sturdy construction, good fit on the foot, fits in a backpack (so you don't have to carry 300 flip-flops).. and it also comes with a very nice and practical mesh bag for transportation.
You won't reach crazy speeds... I found it to be a good compromise between a beach shoe, so I don't hurt my feet on the rocks, and a water shoe, that fits in a small bag, and allows for easier walking until the starting point of swimming (since I don't jump off a boat)