Stiletto designed the Fairbairn–Sykes fighting knife, a double-edged dagger with a long narrow point designed to optimize the blade for thrusting, though it was also capable of slashing strokes if the cutting edges were sharpened. Other variations of the F-S knife soon emerged, including the U.S. Marine Raider Stiletto, which was based upon the Fairbairn-Sykes knife, and the U.S. V-42 stiletto, designed from the outset to emphasize thrusting over cutting. During the 1950s, large numbers of folding switchblade or automatic opening knives with locking blades were imported from Italy to the United States. Most of these switchblades were side-opening designs, though
Kitten heel by teenage girls, who may be considered too young for high heels. Kitten heels are shoes with a tapered heel of approximately 2.5 to 5 centimeters (1–2 in) in height. They are on the shorter end of stiletto shoes, which can have heels as tall as 12.5 centimeters (5 in). Kitten heels were introduced in the late 1950s as formal fashion attire for young adolescent girls, as higher heels would have been considered unseemly for girls as young as thirteen because of, for instance, unease of walk. They were sometimes referred to as "trainer heels" in the US, indicating their