With the URBAN JUNGLE ULTRA SZ, we've taken the black, polishable utility boot to the next level. Serious professional gear intended for police, SWAT teams and others who require a reliable and durable heavy-duty solution for demanding and active work. SZ version has a slightly lower cut, and a side zip for faster entry and exit. First Responder as one of the intended end users. WEIGHT 510 g | 18 oz (SIZE UK 8.5) SOLE CONSTRUCTION OUTSOLE ContagripA(R) FD MIDSOLE: EnergyCell CHASSIS: Advanced Chassis(TM) UPPER UPPER MATERIAL: 3D Mesh Full grain leather a Non-reflective materials a Synthetic upper UPPER CONSTRUCTION: Closed hooks Gusseted tongue a Medial zip a SensiFit(TM) LINING LINING MATERIAL: Synthetic lining FIT SOCKLINER: Molded OrthoLiteA(R) LACING SYSTEM: Regular laces ANATOMICAL FIT: Standard fit STACK HEIGHT 27mm / 16mm (11mm drop)