BPA-free, airtight, and microwave-, freezer-, oven-, and dishwasher-safe.

Care Tips:
1. Glass bottoms can go in the dishwasher; handwash the bamboo lids.
2. Avoid any abrasive cleaners or scrubbers on the bamboo lids.
3. Dry bamboo lids promptly and allow them to properly dry before using them.
4. Do not include the bamboo lids in the microwave/ oven.