From UGG®, the Men's Tasman GTX Slip On Clogs feature: Waterproof (Waterproof suede, GORE-TEX internal membrane bootie) upper Rear pull tab 17mm UGGplush™ (60% upcycled wool, 40% TENCEL™ Lyocell, 100% recycled polyester backing) lining 60% upcycled wool, 50% TENCEL™ Lyocell insole Foam footbed Sugarcane EVA midsole Rubber heel plate with The UGG® Logo Vibram® outsole Imported. Styling Notes: Best for:  Heavy rain, Heavy snow Cold-weather rated to 20°C