Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: What is it stuffed with and is it cotton shell? Thanks.
Document: These pillow are durable, washable, and they fit perfect in my pillow shams! They are sturdy and comfy. I had to buy 9 because I bought a couch on Craigslist and the pillows were stuffed and smelled terrible. I removed all stuffing and washed the Pillow covers. The price of these are very resonable! I Love them
I ordered 4 of these inserts to refresh my 22&#34; 10-year-old La-Z-Boy couch pillows. Extremely impressed with the high quality! They're so nice and heavy, and very generously stuffed! I do have to mention, however, that 3 of them were super-full, while the 4th was slightly lighter in weight & volume with the tag sewn on in a different spot--perhaps from a different lot?
I was very disappointed in the quality of the fabric and the batting of this pillow. Even after fluffing out of the box, the outer shell is s flimsy and the seams so mis-shappen that this pillow will never hold its shape. The moment there is any pressure on it, it deflates, so unless you were using it as a stuffing for a sham ithat was never used or touched in a quest room, it is not a good investment.
fits in sham on bed well...its not for sleeping on it, its just a pillow...so it is fine. good buy
after searching high and low, finally caved and got this pillow. why are the 24x24 always so much more expensive? I really don't understand. at least this one isn't flimsy/has good fill it seems
We've had this pillow for a few months now and the pillow loses its shape over time. We use this daily on our couch, and within a few months, it's lumpy, bumpy and out of shape. If you plan on using this pillow for decoration only, you'll probably be happy with this. Is you plan on resting your head here, buyer beware.
We love them. We needed them for shams that came with our sheets. Nice quality and holding up real well.
Trned my futon into a normal looking couch with the help of these pillows and a furniture throw! Quick and cheap make-over!! !
This pillow has a super soft cover, and is filled nicely. I think for the price this was an excellent buy. Looks great in my Pottery Barn pillow cover, and I paid half the price.
This did the trick to fill my pillow shams that came with my bedroom set. Highly recommended. Great product and fit.
Answer: I believe its poly fill and the outside is cotton.  They do keep there form (firm) which I like.  I used these pillows to replace my couch pillows and bought covers with zippers on ebay from China.I have dogs so this is a good thing....If your buying 24 x 24 pillows get a cover that is 22 x 22.