Elektra - Over the Knee Boots. Petite Over Knee Boots In Black Suede `Electra` by Pretty Small Shoes. Get on board with the black knee high boot trend. Crafted in supple black faux suede and comfort friendly elasticated fabric to the back. With its easy wear 4.5cm block heel, you'll be wearing these super versatile boots with everything. Skirts short and long or tucked into jeans are the classic options. Shaft dimensions in size 34 : Approx. Shaft Length 40.5cm Calf circumference 36cm (+/- 1cm up and down sizes - note also elasticated) Upper: Suede + Elastic FabricInner Lining & Sole : Sheep skin Colour : BlackHeel Height: Approx. 4.5cmSize From: UK13, EU32, US2 and 210mm