Koolaburra by UGG Suede Short Boots - Koola Black These suede boots are made for chilly days, thanks to their cozy sheepskin and faux-fur lining and molded midsole. From Koolaburra by UGG. Style: Koola Suede upper Sheepskin and faux-fur lining; lightweight, molded EVA midsole/outsole Approximate measurements: Sole 1"H; Shaft 10-1/4"H; Calf circumference 13-1/2" Measurements were taken using a Medium size 9; measurements may vary depending on size Fit: true to size Half sizes should size up