Don't you just hate it when your shoes get grimy while attending an outdoor concert? If this sounds a lot like you, then you might want to grab yourself a pair of 'Festival Feet'.
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For the low price of $8, these converse lookalikes will spare your feet from getting grimy while looking like you just walked out from a cartoon. Of course, you could always just stick to wearing wellingtons or wrapping actual plastic bags around your feet.