This tupperware set is made from strong borosilicate glass and lined with minimal silicone, making it great option for meal prep while reducing potential microplastic ingestion. Make sure to remove the lid before reheating, since it contains silicone.
Borosilicate glass
A glass more resistant to thermal shock that regular glass, making it good for kitchen applications. Does not shed microplastics.
Silicone
Semi-synthetic material that's more durable than plastic but could still leach microplastics.