7 For All Mankind The High Waist Skinny in Black. - size 29 (also in 25, 26, 27, 28) 7 For All Mankind The High Waist Skinny in Black. - size 29 (also in 25, 26, 27, 28) 50% rayon 42% cotton 6% poly 2% spandex. 12 at the knee narrows to 9 at the leg opening. SEVE-WJ1272. AU0211526A. Every person should own at least 7 pairs of jeans, one for every day of the week. - 7 For All Mankind. Changing the perception of denim from everyday basics to effortless statement pieces, 7 For All Mankind quickly reshaped the industry. Born in Los Angeles, CA, this denim brand gained a vast following for its innovative use of alluring fabrics and prints instantly becoming a favorite amongst Hollywood elite.