There are several techniques to widen the width of your steel toe boot. You can try applying a generous amount of vaseline or leather conditioner on the outside of the steel toe work boot, for one. You'll need to apply the lubricant at night so that the boot's leather softens up sufficiently for you to wear it. But steel boot stretchers also make it simple to stretch the boots. If you're willing to purchase one, a shoe stretcher or a boot stretcher may get the job done quickly and effectively: start by applying a steel toe boot stretcher spray to your boots' upper, interior, and insoles. Place the shoe stretcher inside the boots and expand it to its maximum length, then let it sit there for a few hours.