From Vionic, the Catina Suede Buckled Hardware Strap Ankle Booties feature:  Luxe suede upper  Side zip closure  Statement buckle strap detail Synthetic lining  Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock-absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility Lightweight synthetic outsole  Approx. 10.83"  boot shaft circumference Approx. 5.12" boot shaft height Approx. 1.25" heel height Imported.