adidas by Stella McCartney Train Legging in Blue. - size XS (also in S) adidas by Stella McCartney Train Legging in Blue. - size XS (also in S) 79% poly 21% spandex. Stretch fit. Moisture wicking fabric. Perforated detail. Back screen print logo. Imported. ADID-WP111. DW9577. 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.