I teach at least 6 to 10 zumba classes a week and had problems with my IT Band. My therapist recomended a shoe with a lot lateral support and great impact absortion. That is exactly what this shoe does for me. They slide easily to dance, at the same time they feel like they have enough traction to squat comfortably, and most of all , my feet feel like they are in the right place all the time, so my problems with my leg have almost dissapeared. By the way, my classes are very, but very high impacted, and these shoes work great, they bounce and you feel like in the clouds even at the highest impact. I love them. I wish they had funky colors, so I add colorfull shoe laces!!! The size was right for the number, no complains. Best purchase ever!!!