Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: What is the weight of the vest?
Document: i bought this for my father to ice his back due to a degenerative disc problem. this vest does not work well for ice therapy. the overall weight of the vest was much better than some other med therapy ice packs, but the ice packs do not get cold enough to relieve inflammation.Otherwise, the vest seem to be well made and very good for its main purpose of keeping cool while doing activities in the heat. You could run in this vest without much trouble.
All in all, I'm very happy with this vest.
The vest did the job of cooling. It lasts for about 2.5hrs in 110 degrees on a motorcycle if fully frozen.
Perhaps the vest isn't intended to be worn for more than just an hour, but i needed it to last longer for the 50k. it only lasted 5k.
Being able to freeze the removable ice packs is very handy. you can use them without the vest to ice down other body parts too.
We bought this for our son, who has multiple sclerosis, for the summers when he was working outdoors. The heat really brought on his MS symptoms and this vest did the job.
Too bad the closures weren't thought out better. I guess a very tight T-shirt over the vest could have held it on better, possibly.
This type works very well in dry Arizona and looks like a work vest. Easy to remove and freeze ice packs.
Despite some of the other reviews saying the vest lasted 2-3 hours, it barely lasted 1 hr. Would not recommend.
Bought this vest to wear under a Darth Vader Halloween costume a few years ago. Works well and keeps me cool for hours.
Answer: yes