EXCELLENT QUALITY 1.Ultra-high quality high-borosilicate glass, free of BPA and other toxic substances, can be used with confidence. 2.Easy to clean, no stains, recommended hand washing, or clean with dishwashers. 3.It can withstand temperatures of -20°C -150°C, not safe for use in Microwave Oven EXCELLENT TO KEEP FRESH You can use it to store beans, cereals, tea, coffee, sugar, pasta, etc.This glass food storage jar has a alocking clamp and silicone sealed ring which makes the glass container highly sealed，keep food drying.