Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: How long are these fins?
Document: great fins...great value...i am sad that i went to go diving twice and the wind was too bad...so i could not use them however the quality seems great and long lasting...
Well designed, comfortable and durable. Very happy with these. I paired them up with some Neoprene socks and could wear them all day long.
I took snorkeling in open water for first time and she enjoyed the fins. She use them in the pool and no issues with them so far.
I am pleased with the purchase however please check size of the overall fins when you order. Ideal for diving not so ideal for bodyboarding.
fine fins for snorkeling, even in swells. My husband used them daily for hours on vacation, in less than calm waters,  and  they served him well.
These fins are just the right size for my 10 1/2 feet, for swimming swimming and are quite efficient. They are comfortable without boots or socks and are easily put on and taken off.
I think are good fins for snorkeling, feel good on his foot and has good performance. with a minimum effort you can go fast . i like  these fins and my boy friend is very happy
I have not purchased any US Divers equipment before this except for my Rocket Fins when they were the rave. I was very impressed with the function of these fins. Reminded me of my old tried and true Rocket Fins.
I used this over the tubbies, so I can walk over the slippery rocks. the fit was good, although the fins itself feels a little stiff. I will have to get used to this,. the product itself is well made. only 4 stars because of the stiffness of the finsl
I bought the largest size available (large men 10-13) but my foot won't fit inside them when I am wearing my size 10 boots! Who wears open heel fins without boots? No one, that's who.
Answer: yes