The silicone rubber around the lunchbox protects leakage outside the lunchbox.
NOTE: The steel compartments are specifically designed to separate solid foods and are not intended for liquids. For soups or other liquids, please use the included bowl to avoid any spillage. if you are looking for lunchbox that prevents leakage between the compartments too, go for our 3 compartment Leakproof bento box.
