I purchased these and wore them briefly twice. They don't quite fit, so I'm selling them. BIRKENSTOCK / 【EXCLUSIVE】 BOSTON EVA BLACK Exclusive model with added casual appeal From BIRKENSTOCK, BEAMS, BEAMS BOY, and B:MING by BEAMS have each selected a color for the domestic exclusive model "BOSTON EVA," which will be launched in unisex sizes. ■Design This model combines the characteristics of EVA material with the "BOSTON," which is a representative model of the brand. The material is extremely lightweight yet has excellent elasticity and cushioning, and it is also environmentally friendly as it does not contain harmful substances. In addition, the flexible upper gently fits the foot, and the integrated outsole is non-slip and ensures high water resistance.