Answer
Dec 04, 2023 - 07:47 AM
For more information then this I would contact the manufacturer. 
3M Thinsulate: Thinsulate insulation is made with fibers that absorb less than 1 percent of their weight in water. It’s one of the lightest synthetic insulations on the market, and helps keep feet warm, even in damp conditions.
Scotchgard: Shoes featuring Scotchgard’s protective treatment means these styles are water repellent and resist stains.
Vaporex®: For additional warmth in cold weather boots and footwear, we have designed our Vaporex® insole, which retains heat by using a foil backing and insulating materials to keep feet warm in the most inclement weather.
