Aritzia Denim Forum Jeans in a modern cigarette style. NWT. 5 Button Fly Inspired by women who pushed creative boundaries, The Yoko is Denim Forum's signature high-rise slim jean. The Yoko fits like a treasured vintage find that feels great from day one, thanks to a touch of stretch. Premium Italian organic cotton denim becomes more beautiful over time - we call it performance art. This version comes in an authentic medium-light indigo wash with subtle whiskering and a clean hem.