rich suede and soft sheepskin, the new Classic Slip-On offers easy entry and a laidback look. Lined in our signature UGGplush™ blend of upcycled wool and plant-based TENCEL™ Lyocell, it's finished with an ultra-lightweight outsole for grip and cushioning.The outsole of this product is either a sugarcane EVA outsole, which is a responsible compound using sugarcane foam that allows us to reduce dependency on fossil fuels by replacing petroleum-based ethylene, or a Treadlite by UGG™ outsole.