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: Is this a canvas bag or polyester shell. Description mentions both.
Document: Amazing quality and really warm, worth the price. Also has a cell phone holder in the sleeping bag which it doesn't say in the details I loved it.
Use this sleeping bag on an almost daily basis, keeps us extremely warm and toasty. Only gripe about this bag is that the filling bunches a bit by our feet.This bag works for me and my boyfriend wonderfully though. Nice to snuggle up in the bag.
Simply amazing. This has kept me and my husband toasty warm during the past 5 years of camping. We have been outside when it has been in the teens, and I (being someone who is in a constant state of coldness), was nice and warm. I remember once waking up and having to go to the bathroom, and I didn't realize how chilly it was until I stepped out of this sleeping bag. While some might say it is a bit pricey, it is definitely worth it if you are the outdoors type.
ive had this sleeping bag for 4 years now.. everything about it is amazing.. no cons at all..  worth every penny... just so everyone knows... it is the same size as a full sized mattress! amazing.. never a cold night with this sleeping bagUPDATE! so i have had this sleeping bag over 6 years total now. i just used it a few weekends ago! so i am updating on HOW AMAZING THIS SLEEPING BAG REALLY IS! buy it buy it buy it!
i recommend this bag to all my friends! and a few have gotten one for them selves! this bag gets used 5-20 times a year for 3-7 days at a time. im a tough camper too. it has been through H311 and back! and is always ready for my next trip! it stays fluffy aand warm! everything about it is great! washes clean easily! EXTREMELY LITTLE WARE!right where my butt sits where i lay is not blown out like my last sleeping bag from a teen.
We just love it!!! It kept us warm on an open air early season camp and we are cold people and no issue with comfort or quality!
Not a single penny wasted on this baby.
I use this in my VW eurovan weekender and it feels and looks like it was custom made. Warm and comfortable it is truly a great product. Im getting another one for warmer weather.
! A MUST BUY! LOOK NO FURTHER!
Answer: no