Safe Material:This lunch box is made of food grade stainless steel interior and PP exterior, it is BPA free, non-toxic, never rust and does not retain flavors or scents, you can enjoy your meal without worry.
Easy to Open:There is a small valve on each lid, when you store food in the lunch containers, the pressure can be release from the valve to help you open or close the lid more easily and avoid damage to the buckles.
Well-seal Ring Design:Perfect to keep the food warm and fresh, heat resistant and durable for long term use. There are safety buckles on both sides of the lunch box, which can be fastened easily by pressing. There is no need to worry that the lunch box will loosen.