These Thinx Leggings ($95) are available in black and kale, in sizes XS-XL, and have all the features of a really great pair of workout pants — and then some! On top of the fact that they can absorb as much blood as three tampons, they're high-waisted and made with side pockets perfect for stashing your keys, credit card, or face mask. And when cramps strike, they even have a pocket meant for a heating pad in the front.