The phrase "tall boots" refers to a type of footwear that extends high up on the leg, typically reaching above or just below the knee. These types of boots are usually made from leather and have a heel that can range in height from low to very high. They are often worn for fashion, as well as for practical purposes such as riding horses or providing extra support while walking on uneven terrain. The term "tall" is used to describe the length of the boot, which extends above the ankle and covers a large portion of the leg.