TruePurpose Stretch-Jersey Midlayer Jacket

Adidas by Stella McCartney crafts this red TruePurpose jacket from stretchy moisture-wicking jersey, making it an ideal mid-layer for cool-weather workouts. Made with soft-shouldered raglan sleeves and laser-cut ventilation eyelets, it’s printed with a logo at the sleeve – note the thumbhole cuffs – then finished with zips at the front and pockets.

• 64% polyester, 36% elastane

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.