Buy this along with 5 others from the same Reeboks line. The size is different from the others. I say size 0.5. Also Lightning Hassel. And the tongue of the shoe is sewn inside. It's so thin that you have to keep your toe in the shoe all the way to the tip to keep the tongue from curling. There's also an internal strap that wraps around the heel and does the same thing as the tongue. In total I have worn them 3 times because they are PITA.