What the hell is Thermoplastic Rubber?

And why is it being put on shoes? This is the second pair of sneakers I've bought this month, that have barely lasted a couple weeks. The description of what the shoes are made of, says the outsole, or bottom, of the shoes is made with TPR (thermoplastic rubber). Walking, just a small 30 minute walk... show more And why is it being put on shoes? This is the second pair of sneakers I've bought this month, that have barely lasted a couple weeks. The description of what the shoes are made of, says the outsole, or bottom, of the shoes is made with TPR (thermoplastic rubber).

Walking, just a small 30 minute walk everyday, on the sidewalks of the street, and the bottoms have aged so much in 2 weeks than my old shoes did in 2 YEARS!!
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