I called the Warm company after being unable to find the Tater bag batting...they told me to NOT use Warm and Natural because of a poly scrim on it.
Also please remember only to use cotton thread.

This may be a stupid question but why would you microwave it?

I must be lucky as I have used warm and natural in my fabric bowls; have had no problem with them under by soup bowl in the mircrowave. Then again, I only use it for 2-3 minutes!

Auntnana, you put under the bowl in the microwave to act as a hot pad so you don't burn your fingers taking the bowl out of the microwave. Also work great for cold bowls of icecream!

Too funny! I did the same thing with mine until just recently. I bought mine at a craft show a couple of years ago and it just didn't occur to me to put it in the microwave with the bowl. Anyway, tried it once with no problem but probably won't do it again. Made me kind of nervous :)

I had heard this as well. I buy Warm and Natural without scrim. My mother loves her microwave bowls, but never puts them in the microwave.

I used w and n 100% cotton batting until the warnings terrified me into using Tater batting. Not one has complained and I haven't heard of any fires so far ��. I labeled my bobbins "cotton" to make sure I don't mess that up. I did put the batting in the wave for about 5 minutes and no problem. As I said I'm now too terrified to use other than special batting. I try to but it on sale.

I made my microwave bowls with all cotton. Cotton fabric, cotton thread and a double layer of cotton batting (W&N). Best not to use polyester (thread, batting, fabric) because they can melt in the microwave. I love these bowls. Great for making my oatmeal in the morning and warming up leftovers.

I posted before I read the post about W&N. So far I haven't had any problems but will use them differently now. My original bowls I use the bowl batting that I purcdhased on sale at JA's for 50% off.

I really need to make some of these.

please be very careful what you put in your bowls... especially if you plan to put them in the microwave, or to gift them. I purchased a potato bag from a craftshow, gifted it to my MIL, and it started on fire in her microwave the first time she used it. Not cool! I had been using one for a couple of years, and had chalked up her bad experience to the fact it was a high powered microwave. About a year ago, mine started on fire, as well, in my 20 year old microwave that didn't even have the power to pop popcorn.