Fitness leggings are leggings made for sports activities such as running, fitness, yoga, CrossFit etc. They are stretchy, comfortable and good looking. Most of fitness leggings are made of spandex. This material is synthetic fiber and is so popular because of a high quality of elasticity. Spandex leggings are really soft to touch clothing that makes you feel completely comfortable. This material gives you a smooth feel when you run your fingers over it. These are the stretchable type of apparel that can be simply pulled off for extra fit.