adidas by Stella McCartney Warp Knit Tight in Black. - size L (also in S) adidas by Stella McCartney Warp Knit Tight in Black. - size L (also in S) 76% polyamide 24% elastane. Banded waist. Leg cut-outs. Back waist graphic text. 4-way stretch fabric. Imported. ADID-WP112. DY4183. 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.