Great for toning core muscles

In addition to getting the kicks stronger, the kids say that the fin also works the abs.  Not good for flat footed swimmer and would like to have one that fits the smaller foot of the girls.  Size ranges from men''s 9 - 13.

This fin offers great performance, but after less than a handful of work outs (7-8), the left boot is tearing.  Based on another reviewer with the same problem, I would have to say the quality is lacking. I'm 170 lbs and have a 9.5 shoe size so nothing extraordinary.  This fin should last longer.

THIS IS THE SECOND FINIS RAPID MONOFIN THAT I HAVE RECEIVED.   BOTH HAVE BEEN DEFECTIVE IN THAT EITHER BOOT SPLITS AFTER ABOUT TWO USES.  I AM NOT REFERRING TO THE STRAP THAT HOLDS YOU IN, RATHER TO THE ACTUAL FOOT HOUSING THAT ONES FOOT SLIDS INTO.  THE ONLY PEOPLE USING MY MONOFIN ARE YOUTH BOYS AGES 9-14 WITH THE LARGEST FOOT SIZE BEING A 10.

very first time using this.. was a task. I am now getting the hang of them. as far as the width for the foot pocket, might want a little bit more give. But of course I have to break them in. I noticed it is definitely easier in deeper waters. Once you get the hang of it.. you'll be a mermaid in no time. truly my only suggestion is that they trim down the size of the fin a little bit. If you don't have experience they will float upwards.  With these on, I lay 8 ft long. Other than that. I am satisfied.

If your looking to expand your workout. This monofin does the trick.
It really helps with body position and speed. Plus it gives my legs a great workout and it's fun.  Just make sure your feet don't move.
Great product.