The airtight canisters set is made of glass, which is healthier than plastic jars. Withstands temperature -4℉~302℉ , suitable for all kinds of environments. Dishwasher and microwave safe. 5 piece canister set in clear glass to find your kitchen goods quick and easy. The wooden lid and clear glass offer minimalist and modern design that blends in perfectly with your appliances and kitchen decor.