The animal print aerie criss cross leggings tik tok pants are a style that is quickly gaining popularity due to the fact that they are comfortable and stylish. The “ Legging Hiit” workout is effective because it trains the core muscles in your legs and thighs to work together. So what are you waiting for? Let’s take a look at some of the sexiest aerie criss cross leggings tik tok pants that you’ll love. 1. When it comes to the fit, it is important to find a pair of workout leggings that fit comfortably on your body. You don’t want to end up feeling like you are too big or too small. When it comes to exercise, nothing is more important than sweat-resistant pants.