Also the breakdown of PU soles is because of hydrolysis. It's a reaction to humidity with the PU. I have been told it happens even quicker when boots are not used very often.
https://www.safetyjogger.com/en/acad...oles-explained
Also the breakdown of PU soles is because of hydrolysis. It's a reaction to humidity with the PU. I have been told it happens even quicker when boots are not used very often.
https://www.safetyjogger.com/en/acad...oles-explained
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