For mom and me! Young fashionistas want to be just like their idols. This is no different in the case of stylish BIRKENSTOCK boots, which are available in matching looks for both women and girls. The Stirling model is a calf-high boot that takes its design inspiration from the classic Boston model with a leather strap and a metal buckle above the instep. For 1/2 sizes, order next size up. N = Narrow Width.