Sportswear was a clear source of inspiration for Isabel Marant's SS18 collection – supermodel Kaia Gerber opened the show wearing these white trackpants. Lightweight in crisp cotton, this carefree design gathers at a cropped ankle length and finishes with two silver-tone snap buttons at the waist, bringing focus to the high-rise cut. Follow the runway's example, pairing yours with a same-tone voluminous top.