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. Suede upper UGGbraid made with 100% recycled polyester fibers 17mm Sheepskin or 17mm UGGplush 60% upcycled wool, 40% TENCEL Lyocell lining 17mm UGGplush 80% upcycled wool, 20% TENCEL Lyocell insole or 17mm UGGplush 60% upcycled wool, 40% TENCEL Lyocell insole Foam footbed Sugarcane EVA Outsole or Treadlite by UGG EVA outsole Recycled polyester binding Heat-embossed UGG logo NEW IN BOX