Title: OK book, but not worth buying
Product review: This is an OK book, but not worth buying. The book is too repetitive, and could be shortened to a few pages. The basic idea of the book is: warmth = thickness. Most insulation insulates because of the dead air space it traps (not because of what the insulation is made of), so the idea of staying warm is to just have enough dead air space. So, the "Secret of Warmth" is to just use something to make dead air space and seal it up good so the wind won't blow in and the air won't leak out. And don't get it wet. There, you've read the book.
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