Mountain Horse Ladies Aurora Tall Boots Black. The Mountain Horse Ladies Aurora Tall Boots are the epitome of high-quality equestrian footwear. Offering full grain leather upper and a genuine smooth leather lining for a classic and stylish appearance, whilst ensuring the boot stays upright at all times. The Aurora Tall Boots are made from highly-durable and strong, yet subtle, leather to withstand years of riding. With elasticated outside panels, YKK #10 coil zipper and advanced Vertycore 4D shock impact reduction technology along with Vertycore insoles, system and outsoles.