Glass is better for reheating. Just don't drop it.

Glass lunch boxes are better than plastic for reheating food. They handle heat without warping, don’t absorb stains or smells, and there’s no debate about chemicals leaching into your leftovers. Plastic does have one real advantage — it survives being dropped.

The main trade-offs are weight and breakage. Glass is noticeably heavier, so it’s a pain if you carry your lunch across the city. And yes, it can shatter if you’re clumsy, which is both annoying and wasteful. But for reheating specifically, glass wins every time. You don’t need to worry about weird cloudy stains or a container that comes out of the microwave looking like it aged ten years.

If you’re worried about breakage, look for tempered glass or a glass container with a sturdy silicone sleeve. Those handle drops a lot better.

Plastic is fine if you’re reheating something low-stakes and you’re rough on your stuff. But for actual food quality, glass is the better kitchen tool.