I'm sorry you had a bad experience. I've had mine for months and have never had a problem with it. It is made from 100% cotton materials, including the batting and thread. I recently cooked sweet potatoes in it which took a total of about 10 minutes. However, I cook for 4 minutes then let the bag cool down for about a minute then cook another 4 minutes - 4 minutes at a time at the most. There must have been some type of non-cotton material in the batting as mentioned on this board already. I love my Tater Baker Bag and use it all the time.