From the manufacturer: Born on the beaches of California, our Classic Boot was originally made to keep surfers warm after early-morning sessions and has since become an icon of West Coast cool. It's crafted with our famously soft sheepskin, which naturally wicks away moisture so you can wear it anywhere – both indoors and out. This product was made in a factory that supports women in our supply chain with the help of HERproject. This collaborative initiative creates partnerships with brands like ours to empower and educate women in the workplace. 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.