First of all, my husband and I live in Colorado where the temps are very cold at times so it's normal to dress in layers. The first day my husband ware these pants the temp was in the single digits and he had a water-main break. So needless to say, he was outside in the cold weather digging a hole. When he came home that night he told me he was so happy that I bought him these pants with the flannel lining in them because it made a difference. So, I got extra brownie points! :) Thanks Carhartt!!