Not only are the Girlfriend Collective Compressive High-Waisted Leggings (£62) completely opaque (and very flattering), but they're sustainable, too. The brand utilises up to 25 plastic water bottles to construct each pair of Compressive Leggings, which are made from 79 percent recycled materials and 21 percent spandex. The leggings come in two lengths — long and a 7/8 crop (shown here) — and a fun array of bold colours like periwinkle, red, and purple, the dyes of which are also eco-friendly.
Image Source: Girlfriend Collective