One of the most bad ass boots out there is the iconic engineer boot. This style of boot started out as work wear and quickly became the boot of choice for bikers the world over. For bike use, they are typically equipped with steel toes and high back heels. This pair of Harley Davidson engineer boots, most likely from the 1970s or 80s has neither, meaning they are a bit better suited to normal everyday wear (especially with the low heel).