Ballet flat Mary Jane Slingback Albano Vanity Bellita Birkenstock Carmens Donna Lei Enzo Di Martino Fitflop Hispanitas Karl Lagerfeld X Kaia Kurt Geiger Lola Cruz Patrizia Pepe Pikolinos Pons Quintana Stokton Tommy Hilfiger Viguera 2 - 2.5 4 - 4.5 5.5 - 6 6.5 - 7 9 - 9.5