How to Decode the Tupperware Symbols on Every Product

The squiggly lines on your Tupperware mean that it is safe to put in the microwave. This symbol varies from an actual microwave with a dish to waves representing radiation, but either one means you’re able to heat up last night’s takeout—unless you’re part of the crowd that prefers pizza cold, of course.

Freezer Safe

If your Tupperware container has a snowflake symbol on it, don’t worry about freezer damage—that symbol means it’s freezer safe. If you don’t see the snowflake symbol, avoid putting your new containers in the freezer. Extreme temperatures can deteriorate plastic, and if containers aren’t food safe, this can cause chemicals to spread to food when the containers are taken out of the freezer.

Recycling Information