Black Block Heel Over The Knee Boots Tracking down the perfect black over the knee boot just got a whole lot easier, thanks to Kurt Geiger London's chic new Burlington silhouette. Taking the essential high-leg trend and respinning it with a wearable 60mm block heel, this elegant design features a branded pin and an inside zip for easy on/off. Try it with a figure-hugging pencil skirt or slender shift dress for a thoroughly modern take on office dressing that'll take you from desk to dinner with ease.