The 561 isMongrel's toughest boot, designed with a higher cut for added coverage and manufactured with a full leather upper. Bearing the mighty Vibram®sole, this boot can withstand temperatures up to 300°C. The exterior may be fortified but look no further for comfort as the interior of the boot includes the OrthoTec Poron®footbed which enhances comfort with its shock absorbing properties and anatomical arch support. This boot is a confident choice for boiler makers, miners, grinders, road workers or anyone who needs protection from the heat. Mongrel Wheat High Ankle ZipSider Safety Boot 561050