Quote Originally Posted by WtGreg View Post
because it supposedly holds heat better. Never heard this before, so was wondering if it is worth implementing...
I don't think holding heat is the idea behind the pillow fiber, but rather better transfer of heat throughout the box. That being said, I've tested a 7x7x6 box outdoors overnight at less than 25 degrees, packed with shredded and whole newspaper with a heat pack, and was plenty happy with the temperature inside the box the following morning.