Wash before first use and make sure the silicone joint is clean and well positioned. If the lunchbox is not airtight anymore, tighten the closing clips.
Do not put in the microwave. Do not fill to the brim with hot food. Do not take in hand directly after putting in a very hot food. Do not put the lid in the oven.
Composition: 18/10 Stainless steel and silicone joint
Made in South Korea