Lunch box is made of food‎-grade materials and high quality stainless steel‎.‎Non‎-toxic‎,‎testeless‎,‎health and safety‎.‎ Box identity layer design can separate out the food in the two layers‎,‎effectively prevent odor‎.‎ High temperature‎,‎strength‎,‎ wear resistance and non‎-toxic‎,‎ its heat preservation can last for 2~4 hours when the indoor temperature is below 15℃‎.‎ Lock tight‎,‎ good sealing effect‎,‎ which can prevent leakage effectively‎.‎ The lid with extended fastening design‎,‎it can close the lid and box tightly Specification‎:‎ Material‎:‎ Stainless Steel Heat preservation time‎:‎ 2~3 hours Size‎:‎ One layer‎:‎ 18x7.5cm‎,‎Capacity‎:‎ 0.9L‎,‎Weight‎:‎260g Two layers‎:‎ 18x13cm‎,‎Capacity‎:‎ 1.7L‎,‎Weight‎:‎454g Three layers‎:‎ 18x18.5cm‎,‎Capacity‎:‎ 2.5L‎,‎Weight‎:‎673g Color‎:‎ Blue‎,‎Green‎,‎Pink Note‎:‎The lunch box can not be put into the microwave‎.‎ Package included‎:‎ 1 x Stainless Steel Lunch Box