Boston is back, bigger and better than before. The Birkenstock Women's Boston Chunky Platform Sandals fine-tune features from the original Boston with a contoured footbed for lasting comfort and a platform EVA sole to scale your stature. EURO SIZING, please see conversion for best size to choose: US 4 - 4½ = Euro 35 US 5 - 5½ = Euro 36 US 6 - 6½ = Euro 37 US 7 - 7½ = Euro 38 US 8 - 8½ Euro = 39 US 9 - 9½ = Euro 40 US 10 - 10½ = Euro 41 US 11 - 11½ Euro 42