Strappy stiletto heels. The Fiebiger Shoes Hubba Bubba heels have a patent leather-look upper and a rounded, open-toe design. The heels feature a narrow strap across the front, and contrast, criss-crossed straps across the ankle. The Fiebiger Shoes Hubba Bubba heels have a 6cm zip fastening on the back, and an 11cm stiletto heel. Upper: Synthetic. Inner: Synthetic. Sole: Synthetic. Heel Height: 11.000. Shaft Height: 6.500. Platform Height: 2.000.