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Title: Not recommend for long distance running.
Review: I bought this for my wife, she used it for her half marathon run. On mile 4 to 5 she had develop blister in between her toes from too much friction. It's a great idea, but didn't really work for long distance running. I had on my Thorlo's running socks and I had no issue with blistering. Would not recommend for a marathon.
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