[serafino]

I have had mine now for a little while so I'll give a completely honest opinion on them for people interested in buying them.
I ordered mine from leisurepro.com. The shipping was quick and on time. I received them in perfect condition. I am a size 9 and 1/2. I ordered a half a size larger than what my foot actually is to accommodate the use of socks and the growth of my feet. So I ordered the 10-11. I use 3mm socks with them and they fit extremely comfortably on my feet with the 3mm socks I have. The foot pocket is very comfortable and not very loose on me. If you are young and still going to grow like I am I would suggest getting a size that you can grow into since they fit very well. I have done some surface swimming with them and they are comfortable even for that. The blades are fairly flexible in warm water almost a little too flexible but they are perfect for me when I dive off the coast here in California since they stiffen up a bit in the cold water and allow my kicks to be very efficient while not putting a strain on my ankles. While dolphin kicking in these bi-fins I can do 100m dynamic apnea. Using "regular" kicks I can only do around 60-70m. They have been working out very well for me. For a relatively inexpensive fin it is a great fin to start off with or even stick with.