Tapered Shell Track Pants

Adidas By Stella McCartney follows the latter's pursuit of sustainable design in these black track pants, which are partially crafted from recycled nylon. They're cut to a relaxed fit that tapers towards the ankle through an elasticated cuff, then are fitted with buttoned flap pockets at the rear.

• 61% polyamide, 39% recycled polyamide

Adidas and Stella McCartney’s longtime collaboration is a fashion favourite, with high-performance trainers, clothing and accessories that are wearable in and out of the gym. From Ultraboost sneakers to recycled track jackets, each piece is designed with function as well as form in mind.