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: Can this bag be unzipped from either side (i.e., can either person unzip their side of the bag)?
Document: I love this sleeping bag. I just recently bought the 20 degree rated sleeping bag before my husband and I went to the Grand Canyon. It was great for keeping us warm in the cold temperatures at night. One night the low was 10 degrees Fahrenheit and my husband and I were still warm. The only downside of this sleeping bag is it can be too warm. Thankfully the sleeping bag unzips on each side so when either my husband or I get too hot, we can just unzip our own side.
We bought the Teton Queen Sized 0 deg Sleeping Bag a few weeks ago and finally used it last weekend. All the other reviews are correct, this bag is completely warm even on a 38 degree night, if anything I was too hot in the bag. The zippers on either side let me unzip my side while my wife kept hers zipped. We will be camping in 3 weeks up in the North Carolina mountains and it is likely to go below freezing and I am confident we will be completely warm, at least until we have to get out of it to get dressed.I don't think the "flannel" lining is cotton flannel, it feels more like a synthetic flannel-like substance, which I think is actually better.
This sleeping bag is very warm and is a great size. We slept 2 adults (with a dog curled up in between us, on top of the sleeping bag) very comfortably. If one person gets hot they can unzip their side of the sleeping bag and not bother the other person, which is nice. The bag is very big, bigger than our queen-sized air mattress. The lining is very soft and comfortable. While we didn't test it in 0 degree weather. It was a chilly October night, around 40 degrees and I was nice and toasty.The bag is BIG though.
I suspect this may have been to lower the price. Beyond that, the construction and features appear very good. It seems like a very warm bag that should eliminate the need for packing extra blankets in most cases (something I have had to do previously). The interior pockets and cinching at the top help keep your head(s) warm and prevent runaway pillows. There are guard strips on either side of the zippers to help prevent the liner from getting stuck and tearing. The zippers are in 3 segments: bottom and one for each side.
This sleeping bag is the perfect two person bag. The zippers on both sides are great the ying yang temp couple, but use the velcro to keep it together or you will be placing pass the blanket all night if both sides are unzipped. The hood makes it so your head doesn't touch the bottom of the tent and is almost as good as a pillow, but not quite. The length is great, 6'2" hubby's feet didn't' reach the bottom.The sheet accessory is equally as awesome - imagine trying to wash this mammoth of a bag... haha.
The bag has a lot of great features, storage pockets, wind baffle/ pillow, velcro zipper covers. One down side... when split into 2 bags, the bottom of either bag will not zip to close, only the side will zip... go figure. This is a cozy camper item not for the backpacker. This item weights in @ 19 lbs., it is big (queen size when laid out) and bulky, even when in the compression sack. So let's talk about the compression sack, if you have any experience with sleeping bags, then apply all that knowledge and a little patience, you should have no problem getting the bag in the sack.
We used our brand new Mammoth 0 Degree Double Sleeping Bag a few weeks back on a 3 day car camping trip in North Georgia's Cloudland Canyonand loved it! Very roomy, very good to the naked body and provided necessary warmth on very cool evenings. I rated it 4 as the double sided zippers were a bit hard to zip up each night and each morning found the bag unzipped to half length down upon waking. Now perhaps it was an unknown sleeping person unzipping the bag to allow some cool air in during the night but never remembered doing so!
We could easily sleep in it with room to spare. Also, the side zippers can be unzipped so you are not enclosed on the sides and can just pull the top up over you like a regular blanket if it's not too cold. It also fits back into it's storage bag relatively easily. It's not a pain in the rear like I thought it would be. I was able to roll up the sleeping bag and get it back into the storage bag by myself in a couple of minutes. It does fit snug and you have to compress the air out but that just makes sense.
Talk about warmth, we did not get cold at all, in fact I unzipped my side and opened it up a bit as I was getting quite warm. My wife made a sleeping bag liner out of some jersey sheets, I highly recommend that anyone who buys this bag utilize a liner of some sort. Stuffing this bag into the stuff sack is not that much of a problem if you start stuffing the feet end in first. I love this bag and highly recommend it to any couples that love the outdoors.
I was expecting a bit softer of a flannel finish, this may change over time but as new it's a fairly smooth finish, more similar to the normal synthetic finish of a sleeping bag. We were on twoALPS Mountaineering Lightweight Series Self-Inflating Air Padside by side and between that and the insulation in the bottom of the bag, the padding was just fine.It's also a well thought out bag. When we packed up I unzipped the 2 halves and shook them out, then hung them over the railing when I got home to air out.
Answer: yes