adidas by Stella McCartney The Performance 7/8 Tight in Charcoal. - size XS (also in ) adidas by Stella McCartney The Performance 7/8 Tight in Charcoal. - size XS (also in ) 79% recycled poly 21% spandex. Stretch fit. Contoured seaming. ADID-WM188. S99061. Adidas by Stella McCartney offers women cutting age sports performance clothing they can work out in while still feeling good about the way they look. Not compromising style for performance, the balance is struck between fashion and sport.