Birkenstock Boston half trailer The all-new Boken semi trailer is a comfortable and fashionable must-have item for trendsetters. It is correctly calibrated with card color, cowhide suede, and leather texture. It is soft and customized with hardware. The midsole is equipped with shock-absorbing cork rubber and external EVA lightweight sheet. The ergonomic design of the outsole disperses foot pressure and protects the ankle Size: 35-46