From Birkenstock, the Women's Highwood Suede Chelsea Booties feature: Suede upper Pull on design Moisture-wicking microfiber footbed lining Anatomically shaped and removable deep blue footbed that shapes to your foot with wear Cork PU midsole Rubber outsole Approx. 5.5" shaft height Approx. 7.5" shaft circumference Approx. 1.25" heel height Imported.