【Leak-proof & Convenient Design】Each bento box comes with a silicone seal ring, a double seal design that locks in freshness, leaks and odors.There is a clamshell exhaust valve on the top of the lid, the hot air can be exhausted at any time, which makes it easier to open the lunch box; there is a hidden handle on the top of the lid, which is convenient to carry and move.The lunch box with double heat insulation layer design allows you to enjoy food at any time, No hot feeling in hand.