The Stanley Master Unbreakable is the only lunch box that survives a job site.

The most durable lunch box for a construction worker is the Stanley Master Unbreakable — a steel-frame classic that shrugs off drops, kicks, and tailgate slides.

It’s basically a tool box for your food. The shell is thick steel with a reinforced frame, the latch is heavy metal, and the handle won’t snap off the first time you swing it out of the truck. You can drop it, stack stuff on it, or accidentally stand on it. It dents, but it doesn’t break. That’s honestly what you want.

It also comes with a vacuum-insulated thermos, which is a nice throwback. Your sandwich might get a little warm in there, but the thermos keeps your coffee hot and your water cold. That trade-off is worth it when the alternative is a soft cooler that gets a hole in the side after a month.

If you need a full-sized cooler that keeps ice for days, get a rotomolded one like the Yeti Roadie. But that’s overkill for a lunchbox, costs five times more, and weighs a ton. For dropping off scaffolding and kicking around in the bed of a truck, the Stanley is the right call.

Buy it once, and you’ll hand it down to the next generation. Or at least drop it off a ladder without worrying.