Steel Blue Zip Sided boots hit the market over a decade ago. Since then, we’ve continually improved the technology in our safety boots. The core design hasn’t changed: an industrial-grade zip allows for quick putting-on and taking-off, while the adjustable laces enable a custom fit that stays in place between wears. But work has changed. Crew are facing tougher environments, balancing field and office work and encountering new hazards. Today, Steel Blue side-zip work boots must stand up to, and stay comfortable in, exceptional conditions. Engineered for busy workers in tough conditions, Steel Blue Zip Sided work boots are the ideal balance of convenience and safety.