E-Jen containers are light, simple, and very easy to use and operate unlike heavy crock jars. This product is food safe, dishwasher safe, freezer safe, microwave safe, heat and cold resistant. All materials are FDA approved and BPA, DEHP and lead free.
Very sturdy, thick plastic of some kind. The money maker though is the powerless vacuum seal adjustable inner lid. Keep foods fresh longer, cut down on odors, and if you are driving with liquid it does NOT slosh around. Highly recommend this. Also a great conversation piece with the foreign language label.