adidas by Stella McCartney Run M20 Short in Gray. - size XS (also in L) adidas by Stella McCartney Run M20 Short in Gray. - size XS (also in L) Nylon blend. Elasticized waist with interior drawstring closure. Tricot mesh lining. Side seam pockets. Reflective detail throughout. Imported. ADID-WF31. EA2196. 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.