First of all everyone LOVES this shoe and asks me where it came from. It is truly very comfortable. I have trouble fitting shoes because there is almost a size difference between my feet...so I did order a size up and I put an insert in the left shoe. There still is a bit of slipping, but I found it I give it a good tie and a double knot it stops. The one bad thing about this shoe is that the laces will NOT stay tight. I am going to have to replace the laces with 100 percent cotton laces. I teach BodyStep and I have to re-tye them halfway through class. Otherwise a great buy! Very cool looking shoe on.