"Econyl products are 100 percent recycled from materials like fishing nets and fabric scraps, and what's more, they're extremely stretchy, comfortable, and cute. I love these High-Rise Econyl Leggings ($128), which are made of thin, cool material that's not sheer (thank God) and have slanted cutouts that kept me from completely overheating when I wore them to a hot yoga class." — Maggie Ryan, assistant editor, Fitness