Used for pool and open water swimming.  Recommended by my swim coach because it encourages proper catch technique.  No negatives.

I use paddles more for working out than improving my stroke.  I am a 50 something used to be high school swimmer.  I have used my brother's old paddles for years, but couldn't find the same ones.  I was uncertain which paddle to get and I selected these as they were similar in size to my old pair.  I am pleased with them, but think I will order up to a paddle for a stronger swimmer.

We have three different sizes of Strokemakers.   They are simple to adjust and do what they are suppose to do.  We very much like that they come in so many different sizes.

I use these for about 200-300 meters in every swim practice.  They're bigger than I expected, but work well and I can see my stroke is improving with them.

I usually swim a mile a couple times a week. Lately I've gotten bored and decided to give these a try. I had very little difficulty learning how to use them. The only thing I would like is for the rubber tubes to be a little more resistant to coming out of the holes in the paddles. I got the size one. I would recommend that size for a beginner.

This is a basic paddle and it works ok.  Nothing fancy, just flat plastic with holes and rubber tubing.

I'm a 6' masters swimmer with large hands.  I initially bought the #3's, thinking I was sizing down a size - they were huge.  Why Strokemaker fails to list the actual sizes is beyond me, but for the record the #1 green is 7.5in from top to middle bottom, and 7in at the widest on the diagonal.  I find this size perfect for my use: stroke mechanics and light warm-up.  Using a size too large can raise the risk of shoulder injury.
The tubing supplied needs to be a larger diameter - it tends to slip through the holes.  These paddles are not a very good value.