This is the 6th day wearing these than pantyhose without them being washed. The foot part was stiff when I took them out of the drawer and there was a lot of white residue from the old sweat. After wearing them for 8 Hours they were very hot and sweaty. You can see the steam coming off of my foot. My hot and super smelly foot sweat filled the cracks in the gas pedal. The smell from my feet was overwhelming while I was driving.