Glass body for anti corrosion and no small & color retaining. Double insulation on the cap for hyginen. Cover with small label to stick on the pot for each recognising. Durable plastic from reputable ASVEL Japan cover for long usage Glass body for anti corrosion and no smell, no color retaining, Double insulation on the cap for hygiene, Come with small label to stick on the pot for each recognising Features: Material - Body - Soda glass Cover & Spoon - polyethylene (PP) Gasket - Silion rubber Lid - AS resin Air Tight/Leak Proof - Yes BPA Free - Yes Freezer/Dishwasher Safe - Yes Microwave Safe - No