IBI Low Off-White Knit Sneaker BNIB This time we knit our sneakers from self-regenerating bamboo & recycled plastics from heel to toe. IBl is high performance, low impact and ultra lightweight. Wearing IBl, you'll be lighter on your feet and leave behind a smaller footprint. Material & Construction • Upper & Lining: Bamboo and PET • Insole: Cork + bio-based foam (from mamona oil). • Outsole: Green EVA made from sugarcane • Laces: Made with rPET