Black Faux Leather Studded Spikes Over The Knee Riding Boots. Features on these boots include a faux leather upper, round closed toe, studded spike accents front toe and back heel and side zip for easy slip on and off. Low heel measures at approx. 1 inches tall. Shaft measures at approx. 20 inches long including heel and circumference measures at approx. 16 inches wide. Buy this Knee High Boots. Just $9.99 for Black Faux Leather Studded Spikes Over The Knee Riding Boots.