Safe to Use The airtight canisters set is made of food-grade high borosilicate glass, lead-free, non-toxic. The lid is made from natural bamboo, adding an aesthetic touch to practicality. The glass is dishwasher-safe, but we recommend handwashing the lid for optimal care. Food Storage The glass food storage jar with lids are perfect to store cookies, candy, flour, rice, beans, spice, cereals, salt, spices, seasonings etc. Store good things for foodies and keep your kitchen organized.Before to purchase please refer to the product size and capacity configuration table (very imp ortant) Airtight Storage Jar Each glass jar is sealed around the wooden lid with a comprehensive silicone sealing ring, creating a moisture-proof environment that keeps your dry food clean and fresh. See-Through Design Thanks to the clear high borosilicate glass, you ll always know how much is left and how the preserved food is progressing without removing the lid.