Balenciaga Balenciaga's 'Knife' style was a huge hit on Instagram when it debuted, thanks to its striking elongated pointed toe and razor sharp stiletto heel. Creative Director Demna Gvasalia has revamped the silhouette in a number of colors, fabrics and shapes, but this black calf-length version is still so coveted. They're made from spandex that has a leg-elongating effect and will prevent the boots from slouching down. Team them with a midi skirt or dress.