For their 20th anniversary, 3sixteen has pulled out the stops and put to work their great relationship with their manufacturing partners in India. This iteration of their most popular denim jacket cut, the uniquely tall modified Type 3s, is made with natural indigo, a rare feat that is much more time- and labor-intensive than dyeing with the usual synthetic indigo, with twice the number of dips. he result is an indigo hue that is extremely rich with layers of complexity.