There are different weights of fleese. Some are real thick and can be bulky. Thinsulate is very warm once for once but very expensive. It is sold in grams. My duck wadders have 1500 grams of thinsulate in the boots, which is plenty even in the coldest of duck days. 'Micro fibers' are the next generation.

Life is too short to have a 'hate on' for so many things or people. Isn't it?