This is a great shoe for working out indoors.  I love wearing them while doing my DVD workouts, Wii and Xbox workouts.  They have excellent arch support with a well cushioned foot bed, which is great for jumping and bouncing.  They also are very well ventilated, which help to keep my feet cool.  The traits that make them especially great for indoor workouts are that they are light, flexible and the tread works well on carpeted surfaces.  I absolutely love the yellow and orange color!  So very glad I made this purchase!