Knee-high boots are a style staple and the Bravado from Annie lets you wear the look without breaking the bank. The round toe and mid-height heel offer a silhouette that's perpetually in fashion, while the full zipper makes for an easy fit. materials: Synthetic upper. Manmade sole. measurements: Shaft height measures approximately 16" from arch. Boot opening measures approximately 14 1/4" around. Heel measures approximately 2 3/4" country of origin: China.