To determine which black leggings were truly the “best,” our testers wore (and washed) each pair a minimum of five times, during various types of activity (running, hiking, lounging, running errands, and more). Based on firsthand experience, testers determined which pairs excelled in every category of criteria (fit, sizing, material, etc.) From there, our team narrowed down the best pairs to suit various needs and preferences. We also noted which ones held up to regular wear and washing (meaning how much the fabric thinned or pilled).