Out-of-Stock Home Boston PRO BI-1026189 $1,450.00 The BIRKENSTOCK Boston Pro is a veritable classic that can easily be worn all year round. Thanks to its two components, the sole promotes stability and comfort. It is comprised of a midsole made of polyurethane (PU) and an anti-slip, dynamic and lightweight outsole that is also made of polyurethane (TPU). The outsole can furthermore be repaired.... View