From a SS 2019 collaboration with Matthew M. Williams for Nike. Williams is a co-founder of the fashion line 1017 Alyx 9SM, and that line’s edgy detail is evident in these tights/leggings. Mesh paneling at the back of the knees and calves for ventilation. Raised rubberized “print” at front of knees. The care tag was cut out by the person who gave them to me, but I believe these are a mix of nylon, spandex and polyester; material is thicker thsn a typical legging but still has stretch. I received in “new without tags” condition and have never worn.