Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: How do you know what shoe size matches?
Document: Ordered a size L for a MEN's size 9. I am a WOMEN's size 12AAA. ( I know - what do I need the fins for? lol) and I was worried I would need to wear a boot with them. They were about 5 cm too short! I am trying the XL and I don't think I'll need to worry about the boot.
I ordered the medium size as other reviewers said they tended to run small (I wear a size 7 shoe). This fin is actually a little too big on me but stays on my feet. Would probably fit better with a swim sock but I don't want to wear one. They certainly give my workout a little extra oomph and makes it easier to swim laps.
They are very good! Size Large fits 9,5 women.
I bought this for my wife his to replace a large speedo fins that had cracked after years of use. This one was a size too small so I had to return it.
Really happy with the purchase, I bought it according to the size chart and they fit right. My swimming has improved a lot since I started training with these.
I'm size 8-9. Ordered size 6-7 Size is correct. medium color is sky blue. By using this to improve the lot of my swimming skills, I hope.I am very satisfied.
These were comfortable fins - they did feel slightly big (I wear a size 9 women's and ordered the medium) but they stayed on my feet so I had no major complaints - until the fin tore about 3 inches during a swim. Will try to send back.
I ordered these flippers size L although my size is a Womens 7/8. I took the considerations of previous reviews that sizes run small in these, but to my surprise it was way to big. Quality wise they looked great and seemed durable.
I bought an XXL and I am size 12.5, and they were at least 1-2 sizes too small. They are impossible to use if too small due to design with a large hard rubber lip were the end of the toes go. They look nice but never had a chance to give them a try.
I got these for my wife and she loves them. They give her a new workout in the pool. Only bad side, is that by following the Speedo sizing chart, we found they ran just a little bigger than what she'd prefer. When pushing off the wall, they slip a little. They don't fall off, it's just an annoyance. We'd probably buy a size smaller if we decide to ever replace these.
Answer: yes