... high borosilicate Glass Base. It is environmental.--Green/pink/purple color Tight-Sealing Covers Made of PP,--Round Design Perfect for ... of Storage Uses--Dishwasher, Oven, Microwave and Freezer Safe-- Color Retail Box--Nice gift to mother ,friends and relatives.--When foods gets ... for heat.-- Useful for candy ,sesame ,food storage. and lunch box. airtight lock glass food container