7 For All Mankind Knee Seam Skinny. - size 30 (also in ) 7 For All Mankind Knee Seam Skinny. - size 30 (also in ) 90% poly 10% spandex. Hand was cold. Coated fabric. 11 at the knee narrows to 9 at the leg opening. SEVE-WJ1417. AU0382561A. As the first premium denim brand on the scene, 7 For All Mankind reshaped an industry. With high-quality fabrics and innovative design, the brand changed the perception of denim from a basic to a statement piece. Long beloved by celebrities, stylists, fashion editors, and influencers, 7 For All Mankind continues to deliver covetable denim, while expanding its offering into full collections that blend unmatched quality with of-the-moment trends for men, women, and kids.