The SAYE Modelo '89 Polar Cactus features an upper made of corn skin (cotton coated and bio-based PU) and mango skin (mango fruit, polyester, and PU). It has a front lace-up closure and logo details, along with certified organic cotton laces. The interior is lined with bamboo and recycled PET, while the insole combines recycled PU from automotive leftovers and virgin PU foam. The sole is crafted from natural and synthetic rubber, and the product comes in recycled packaging.