Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: I wear size 11 shoes but I'm more like 10 1/2. Which size fins should I purchase?
Document: I bought these fins for a week long shark snorkeling trip in the Bahamas. I haven't used them yet but they fit great and are lightweight and small enough to fit in a carry on bag. I'm a size 6 1/2 and got the SM/MD and they fit perfect. Only reason I didn't give it 5 stars is because I haven't tried them in the water yet but I have a feeling they'll work just great. ANd can't beat the price!
The fins are quite small on my feet. I expected a L/Xl to be at least size 12, but these are more like size 10.
Perfect travel fins and seems to be good quality. The S/M. fit both my wife and I and is adjustable. I am a size 8 1/2 to 9 and she is a size 7 to 71/2.
Very comfortable fins and they fit in a carry-on bag. Excellent for traveling. The only problem I had with the description of the fins was that there was no sizing chart.If it helps anyone, I have size 10.5 feet and the Medium/Large fins fit me perfectly. I think they would fit up to 11.5 too since I have some extra strap left over whenthey are adjusted to my feet.
we needed small fins for snorkeling and boogie boarding on a vacation to Hawaii, and looked into a number of other options before deciding on these. Perfect size, fit easily in our bags, and definitely the right kind of fin for those activities. Without much to go by on the size, we got XL's, thinking that we could take up any extra space with neoprene socks or boots. My ladies 11 and DH's 10 had a bit of wiggle room but the foot pocket was so nice and soft we didn't need anything else.
Just got back yesterday from Riviera Maya, Mexico (Puerto Morelos) and enjoyed these a lot. I am a men's 10 and 1/2The Cressi palau fit well. The foot pocket was snug,there was little to no room for fin liners at my size, but not too narrow for a D width. The back strap would occasionally slip down on my heel, but I have no curve above my heels where my Achilles tendon meets my calcaneus. It only happened when I kicked hard. These do pack a little easier in a big suitcase and are the only way to fly in a carry -on  (22 inches overall length).
Great product,except that I got a large (my shoe size is 11.5) and as tight as I could tighten the fins they continued to slip off my heel the moment I kicked fairly hard. Otherwise they worked pretty well.
Fins are comfortable. However, reviews mentioning size was not correct for me. Bought for niece who wears a size 7.5. I wear a men's 9M and it fits me. May have to return for smaller size.
Having a narrow size 14 foot, finding rental fins that fit is often impossible. These worked very nicely, plus they fit in a normal carry on bag. As a bonus, I could even wear (thin) water socks, allowing a week of snorkeling with no blisters. They are shorter fins, so you don't get as much &#34;oomph&#34; as with longer fins. But that's the price of portability.
I purchased these fins for travel. The quality and fit were great, however I thought they  were going to be a tad shorter. None the less they worked great I am happy with my purchase. Bought small in pink for W7 and medium in yellow for M9.
Answer: yes