Can you answer a question for me? I have a pair of hunting boots which are made by Rocky. They are gore-tex & thinsulite lined. They retail for about $200. I have had them for a number of years and for a good part of that they have sat on the carpeted floor of my closet. I just moved them and it seems the soles have become like hot asphalt. Has to be a chemical reaction in my opinion. I wonder what is going on. Needless to say after getting black stuff all over me and figuring oiut if I wear them it won't be long I would be barefoot I threw them away.