Have been looking for good shoes for my Zumbastunden and due to the low price, it just tasted (even with shipping from GB) times with these here. Normal I size 38, I ordered the shoes thanks to the other reviews on the 39th They fit perfectly (in the shoes is, however, EUR Size 40.5 ... ???). I find it not too slippery, although all movements can be very easy to run. And a black abrasion on our shop floor I could not tell. I can to anyone who wants decent footwear for Zumba, but this will not overspend, recommend this shoe very - considered just only the size.