What are the safety features of the glass for food storage? Made of high-borosilicate glass that is BPA-free, temperature resistant from -4°F to 302°F, and microwave safe. The bamboo lid is not microwave safe. Do the lids provide an airtight seal? The silicone gasket provides a tight, airtight seal that prevents moisture ingress, but is not suitable for storing liquids or pickling. What foods are these jars suitable for storing, and how can they be used? These jars are ideal for storing coffee beans, coffee grounds, nuts, trail mix, and fusilli pasta. Put them in kitchen cabinets, pantries, office drawers, or camping gear boxes for easy access and freshness retention. How do you clean the bamboo lid and glass jar? The glass body is dishwasher safe, but we recommend hand washing the bamboo lid to prevent warping. Always dry thoroughly after cleaning. What are the dimensions and shape of this jar? This jar is circular, measuring 3.9 in L × 3.9 in W × 6.1 in H, with a 1-quart capacity. It’s commonly stored in kitchen cabinets, pantries, or dedicated coffee stations. Storage Jar Airtight Glass Jars Storage Jar Airtight Glass Jars Airtight Glass Jars Storage Jar Airtight Glass Jars