The airtight canisters set is made of food-grade high borosilicate glass, which is lead-free, non-toxic, and safe for everyday use. The top features a harmless silicone sealing loop that ensures an airtight and moisture-proof environment, keeping your food fresh for longer. These glass storage jars with bamboo lids are perfect for storing a variety of items, including cookies, candy, flour, rice, beans, spices, and cereals. The crystal-clear glass design allows you to easily see the contents and monitor your supply without opening the jar, making them both practical and stylish for your kitchen or pantry.