Tall boots used for horseback riding. The most popular version of these boots are the so called “officer” boots, based on military boots from the end of the 19th century. They are usually made of black leather of medium thickness. The back part of the upper is reinforced with a leather stiffener to keep it from falling down. They are comfortable for both riding and walking. It has become increasingly common to include zippers on the front or back of the uppers of long boots to make them easier to put on and take off.