With the 360ST, Belleville has created a general-purpose safety boot worthy of their name. The all leather upper and polyurethane midsole guarantee a comfortable boot that can handle a day on the job. At the base of the 306 ST is the Vibram Nav Air, an all-new, high performance outsole with wide, self-cleaning grooves that guarantee a solid grip on wet asphalt and concrete, all with an FOD (Foreign Object Displacement) friendly design.