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: Is the material waterproof? Or, at least, water repellent?
Document: I've been rinsing off the pack after each run in a solution of detergent (very small amount) and warm water, which I will attribute to getting rid of the smell of sweat. Unfortunately, after 3 rinses, the yellow letters (which appear to be a rubber-like material) "N" and "A" have rubbed completely off in whole...if I can figure out a way to stick them back on, I will.
Love this vest, it hugs the body and the design is great. Love all the pockets and adjustments. Love the reflective material.
Depending on how much water you put in the bladder, you can still secure the bladder optimally so that it doesn't move around inside the pack.The only downside to this pack is that the mouth piece tastes terrible at first. However, this can be minimized by flushing it through with water before the you use it for the first few uses. The taste does go away after several uses.
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
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 size, the weight, the pockets are great!I can sweat,No bl&iacute;sterbut  I don't like the color, i would like another color like purple, orange  because White gets dirty very fast
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.
Lastly, I would visit Nathan's website if you are worried about size. I bought the Large/XL version because the Nathan website said it fit a size 36 (bra size) and up which luckily worked for me. I don't think the Amazon site shows you a scale of bra-sizes and which pack (small/med v. large/xl) to buy.
It fits a woman's body and doesn't &#34;bounce&#34; with it.It has great pockets for extras you may want to carry on the run.I really like the slide top closure instead of the round screw off type itmakes it much easier to clean inside! No straps with buckles on the sides to rub your arms.Has made my summer runs much more enjoyable.
It could be a loosening of the shoulder tightening-straps, too, and if I ever wear a light jacket while running during winter and wearing this, I'll be glad for the extra room.
Answer: no