The shoe is on the left and the Nike flex 6 is on the right. I much prefer the Nike Flex 6 because it's less stiff. The Trainers are too stiff at the front and that makes it hard to train when you're at the balls of your feet. There is much more padding on the Trainers which is nice. The Trainers hurt the first time I used them, but maybe I just need to break them in. Don't size up.