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: Has anybody used this hydration pack for long bike rides? Did it work well?
Document: I purchased this Nathan hydration pack - Vapor Shape on 8/3/2013 for marathon training. I've since used it for three long runs of 2 hours, 3 hours, and 3 hrs 55 min. I will use it this weekend for a 90 min run as well. I must say that it's my first hydration pack - so I cannot compare it to others - but it does not bounce, it is very comfortable, barely noticeable once it's on my shoulders, and I like the color as well.
Fits well, doesn't flop around. Reachable pockets for phone and nutrition (GU, honey sticks, etc.). Perfect for a long run.
I bought the gray not white!?! color in this pack and put it right to work on several long trail runs/races and it fits like a glove. I always flip the bladder upside down after filling and sealing it and suck out the air to eliminate slosh and once properly adjusted, it fits snug. I have on occasion had to tighten the straps but I think that can be managed better. The front/side pockets are great along with the handy electrolyte cap pocket up front.
This is by far the best hydration system for running I've ever tried. I find bottles to be frustrating-they are either heavy to hold, slosh in a way that makes them more difficult, or don't hold sufficient volume. Other packs that I've tried moved around on my back quite a bit, no matter how tight the straps. Not to mention the difficulty of straps that are not designed for breasts.This pack fits great.
The cross-chest straps are elastic, which means that you can have the pack secured but still be able to breath. All of the straps are designed for women, which makes a huge difference. All of the pockets are easy to access, even the large pouch in the back can be reached without taking the pack off, which is useful when you need to stash your arm warmers! Since the pack secures in place so well, I've not had any issue with chaffing on runs up to 15 miles.
Amazon.com said the white-colored, female vapor shape pack only held 1.5 Liters (as opposed to the grey-colored similar version for men) and I even called a local outdoors retailer who also said that the product was 1.5Liter in capacity. I took a risk and bought it anyways, and the hydration pack is indeed 2-liter capacity (holds 70 oz's) and the tag clearly stated a 2-liter capacity.
Bought it for my wife for trail running with the dog. Lightweight, well built, and carries enough for two! Drink up!
snug fit plus the hydration vest has.all the attachments and pockets needed for a marathon ! I had spotted this vest in a running magazine. I called most of the sports stores in the San Antonio area and Amazon was the only place that had it.It was shown in Runners as  &#34;gear of the year&#34;. Thank You
A little on the pricy side but it is a great pack and has everything I need.Would have prefered a wide colour range :-)
I ordered this item based on the chest measurements provided on Nathans website. I am looking for a pack with no bounce. I am a 36D-DD  Could not even close the pack comfortably. Sent it back
Answer: yes