The TERRA PRO ZIP by Mack is a men's classic lace up style boot. TERRA PRO ZIP is ideal for workers exposed to sparks and water hazards or just want ease of access, with performance features of the ADAPTTM Range. Composite toe cap, fuel oil & slip-resistant, anti-static, scuff cap. AS/NZS 2210.3 (Class I S1 SRC HRO). What more could you want in a work boot?