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: i want to wear these over boots. actual boots. size 11.5 what size should i get?
Document: Have used for a while now in pool for diver training and they have performed excellent. Size 10.5 foot with a great fit using promate 5mm hard sole boots.
If you are looking for a solid (and heavy) fin that will survive any amount of abuse, this is probably what you are looking for. If you are looking for something lightweight and attractive, these are not for you.FYI: I ordered the XXL since I wear size US15 shoes (with a 14.5 foot). They are definitely sized right (even with room to spare).
I have not used them in open water yet but they seem like a pretty solid, essential set of fins. They're very basic but that's all you need. No flashy colors or anything which is great for me because most of what I do is salvage diving. To give you an idea for sizing, I wear a size 9 bootie with a VERY thick boot style sole. I got a size XL fin and they fit over the boots snugly.
I bought these knock-offs to replace a pair of the originals I bought in 95. I was trying to decide between these old-school and a pair of the lightweight modern ones. I bought these after liking my original pair and went diving with them recently. They worked perfectly. They are indestructible and you can't beat the price. For sizing, I wear a size 11 shoe, and for diving in CA I wear a hard sole bootie and the XXL fin fit perfectly.
Ill be in the navy special warfare program in a few months after this summer when i ship. I was looking for a way to get used to finning before I left but I didn't want to spend a great deal of money for something I would only need to use for a few months. These fins fit the bill almost perfectly. The only thing I did wrong when ordering was the sizing. I have a size 13 foot, so to I ordered an XXL.
If I were to switch to a drysuit and bigger boots, I would get XL.
To make it short and simple, this company sent me the wrong size fins which I called to verify sizes prior to ordering and they said the XXL would fit a US size 10-11. Once received the fins were way too large but I tested them in the water anyways to ensure that they were, and of course they were. I sent the fins back to the company in which I paid 10$ to ship back to the company for an exchange after receiving the go ahead to do so from them.
My original fins died about 5 years ago and the replacements were not half as good as these. I like that they are negatively buoyant - it means I need less weight when diving. The price was reasonable and they are great for diving.
if youve ever been in tough blackwater your gonna want good backup and here they are although not completely milspec you glide in rough water with these fellas they are a good survival tool if you need to bug out silent and fast .. they are strong and give ease of movement
I wear these fins with the 2-3 mm sock thats also sold on amazon and it fits PERFECTLY. Its not too short that the strap hits my ankle. Also the straps on these fins are brand new so I dont see them snapping anytime soon. But I will be looking around for a back up pair of straps that are identical to the ones they came with if it does happen.
Answer: yes