Ninety Union Sienna Black Red MultiGrab everyone's interest in a gathering with the Sienna bootie from Ninety Union. The inside zipper bootie boasts an architectural like profile that gives it all the attention. Its textured heel cup adds to the eccentricity, while the square cap toe brings a modern touch. FEATURES Synthetic upper Inside zipper closure Square toe Synthetic lining Lightly cushioned synthetic footbed Synthetic midsole Approx. 5. 5" shaft height Approx. 10" leg opening 3.