Adidas by Stella McCartney creates sustainable, performance-driven activewear and these black leopard-print Believe This Comfort leggings are crafted from sweat-wicking Climalite fabric made using recycled materials in collaboration with Parley Ocean Plastic. They feature a flattering black curved waistband panel and perforated side panels for breathability. Wear them with the matching tank top for a sharp look that will see you through a long workout.