Whether it's part of a required uniform or simply a boot rugged enough to keep up, this easy-to-wear essential works harder than most. Its lightweight, waterproof upper features abrasion-resistant Perspair(R) panels and full-grain leather, while its supportive padded collar and sneaker-like Resurge foam midsole keep you comfortable through any shift. With the Sonic Side Zip 6" on the job, you've got the perfect blend of professional looks and all-day performance. Design: TAA Compliant Leather and Perspair(R) upper provides superior abrasion-resistance and durability in a lightweight construction Danner(R) Dry waterproof protection Cushioning PU footbed Danner(R) Dry liner has been tested for body fluid borne pathogen resistance and meets or exceeds ASTM F1671-13 standards Semi-locking YKK(R) Side-Zip Resurge low-density EVA midsole provides superior rebound and energy return with minimal weight Bi-Fit stability board for underfoot comfort, reduced weight and added forefoot flex Danner(R) Sonic outsole for traction in diverse terrain