EMU Paterson Hi Boot - Women's Suede Waterproof Australian suede and deluxe Australian sheepskin lining. Sheepskin breathes and keeps your feet perfectly warm in winter and cool in summer. Breathable waterproof membrane with sealed seams between suede and sheepskin Molded suede heel cup and toe cap for better fit and support Durable, hardwearing, rubber EMUsole with quality EVA for comfort and support Satra Thermal rating to -22 F or -30 C