BPA-free labels are the least useful thing on the package

BPA-free labels are mostly marketing, and the only reliable way to know what’s in your lunch box is the recycling code stamped on the bottom.

That little triangle matters more than any sticker on the front. If you see a 5, you’re fine — that’s polypropylene, the workhorse plastic for food containers, and it doesn’t need BPA or its cousins. 2 (HDPE) and 4 (LDPE) are also fine. Those are your safe lunch box plastics.

The ones to avoid: 3 (PVC, full of phthalates), 6 (polystyrene, aka Styrofoam, which leaches styrene), and 7 (“other”). Code 7 is the catch-all, and it’s where polycarbonate lives — that’s the plastic that actually leaches BPA. Here’s the sneaky part: if a code 7 container says “BPA-free,” it usually means they swapped in BPS or BPF instead, which do more or less the same hormone-messing stuff. So a BPA-free label on a #7 is a red flag, not a green light.

Your move: buy lunch boxes stamped with a 5, or skip plastic entirely and go glass or stainless steel. That’s the only way to be truly sure — no label, no guessing.

When in doubt, glass doesn’t need to reassure you.