Eco-minded fitness buffs, have we got a brand for you. Meet Girlfriend Collective. The transparent, planet-friendly company constructs its leggings, bike shorts, sports bras and other activewear styles from a fabric made from recycled water bottles. Even better, Girlfriend Collective doesn't sacrifice style for substance. The designs are sleek and supportive, the colors bold and on trend—caring for the earth while you care for yourself has never looked so good. Shop our selection of women's activewear for Girlfriend Collective and other popular activewear brands.