The idea of taking a brand new pair of boots and filling them with warm water in the bath tub sounds extreme. I had a pair of steel toed work boots and a new job required them. The key is wearing a couple of bread sacks over your socks. In the summer one long day really resulted in a pair of comfortable boots. Do not try this with cheaply made boots as the boots will not make it through the day! Enjoyed those motorcycle boots many years.