I have mine out and using them regularly :D:D:D
Big, small, tubes, you can custom make them for different areas of your body. Heat a larger one and toss it at the foot of your bed (or a couple in a line) under the covers and have a toasty warm bed to crawl into :D:D:D
Mine get microwaved regularly and I have never had a critter problem with the rice :wink: