Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how do you know your correct size?
Document: The reviews on this is correct, it does not move when running, the pocket is kinda small but just big enough to get a small phone, ID and a chapstick in the pocket and the bottle have not leaked on me yet. Works great for the long runs.
Nice construction. Worried about the size of bottles but turns out they are perfect. It does not move around which is nice.
I love it!! It's the perfect size for my 5k runs and I don't even feel that it's on. My sister loves hers too
Belt fits comfortably and I don't even know I'm wearing it! It stays in place and even holds my iPhone and car key fob in the zipper pocket!
Love it! I got a size small and it fits perfectly. Im Currently training for my first half marathon so I'm looking forward to using it.
No bouncing!! Comfortable, even for plus size. I gave it a 4 out 5 because water bottles are a bit hard to pull out from slot. Wish bottles were a bit bigger too. Overall, I I like it!
Comfortably allows you to carry more supplies for those long summer runs. I only wish the pouch was an inch longer so I could put my note 2 in it also (it fits but I can't hook up a set of earbuds due to the size.
Bought this as a gift for a very petite family member. She thinks it's very comfortable, holds the perfect amount of water, and holds the essentials (keys, phone, etc. ).Sizing note: I bought the small, and she has the size out as far as it will go and it just fits. I believe she is a 4 or 6.
First, this arrived before I expected it and used it in one of my races. It is exactly as described. I LOVE this belt!! I saw it at a runner's expo and regretted I didn't buy it then. I was happy to find it on Amazon. The belt fits very comfortable and is also adjustable. It doesn't bounce. The bottles are the perfect size. They don't fall out of the belt when running. That would happen all the time with my old belt.
I use this belt for my long runs of about 8 miles or more. The bottles are a great size. My last hydration belt had way smaller bottles and I'd be left thirsty while out on the road. I have had no issues with the bottles leaking either! And the belt stays in place during my run, so no chaffing. I have the iFitness basic belt as well for my shorter runs and that one has an extra little pocket where I keep my chap stick, ID, etc.
Answer: no