Dancers, CrossFit friends, anyone working on balance and stabilization to improve your athletic performance, and any of you nursing ankle injuries! This balance trainer is awesome. FIRST: The dancer in the photos is incredible, holy goodness girl, you make this look easy! SECOND: It is totally fun to practice balancing while doing passe, releve, attitude, arabesque, battement, pretty much an entire ballet barre class! It takes training to a new level. Although I am a retired professional dancer, I love this product for this purpose! THIRD: My ankles are getting stronger from 3 prior ankle injuries. FOURTH: You can get it in beginner, intermediate, or advanced. The level is determined by the size/shape of the sphere below you. I prefer the advanced model, but young dancers could begin on the beginner model and their training would advance quickly. BONUS: It is super fun to spin around on. It is not designed for this but it sure is fun! Mine is all black and it is super sweet looking and the CONSTRUCTION IS BOMBER. I love that I will probably never need to buy a replacement. I love a product that is DESIGNED TO LAST!