From UGG®, the Men's Chukka Lug Suede Boots feature: Suede upper Rear pull tab, burnishing details Polyester laces, ,etal speedlace eyelets Textile lining made with 90% Recycled Polyester, 10% Spandex 10mm UGGplush™ 60% upcycled wool, 40% lyocell insole Textile sockliner with anti-odor treatment. Twinsole™ interchangeable insoles Poured PU footbed incorporates at least 50% bio-based content The UGG® Logo, heat-embossed on the heel Sugarcane EVA outsole Imported.