Our Classic Boot was originally worn by surfers to keep warm after early-morning sessions and has since become iconic for its soft sheepskin and enduring design. Incorporating a durable, ultra-lightweight sole to increase cushioning and traction, these versatile boots pair well with practically anything - try loose boyfriend jeans and a velvet top. The outsole of this product is either a SugarSole 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. Treadlite by UGG Proprietary compound which increases cushioning and traction for a supremely lightweight, ultra-durable sole. Sheepskin Lining Vetted through extensive, industry-leading processes to ensure only the highest quality sheepskin makes the cut, delivering the signature feeling of UGG. Post-Applied Treatment Treated to repel light amounts of water. Product should be re-treated periodically to maintain protection.