Here is some of the stuff...I bought it to use on the top when I am doing towels...etc. and I have , it worked great. I used it for the chickens on the bottom because I didn't want to pull hard on the stitching using the tear away....so I tried it. It did just fine. This is what I bought and this is the seller I bought it from...they were quick shipping and did great for me....
http://cgi.ebay.com/10ydx12-MELT-HEA...item439d36bed3