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.
Last edited by Fastpedal; 02-06-2016 at 04:58 AM.