3pc Glass Containers - GreenDetails Melii have designed a durable and compact glass container ideal for snacks, condiments and purees! Made from borosilicate glass, these containers can be used safely in the dishwasher, freezer, microwave and oven (up to 400). With a leak proof silicone seal on the lid to lock on in freshness, avoid freezer burn and prevent spills, they are perfect to keep in our purse or lunch bag without creating a mess. The silicone sleeve adds another layer