Multi-Purposes: With 680ml large capacity, this lunch box is suitable for adults to work, kid to school and traveling, visiting-patients, Ideal-gift for your familiy, and kid Materials: The insulated lunch box is PP-material outside and food-grade stainless steel inside, which is healthier to use Easy To Carry: This insulated lunch box has handles for easy portability Good Sealing: The thermal-insulation lunch box has a silicone-ring to enhance the sealing effect, the heat is not easy to dissipate, the thermal-insulation effect is better, and the soup does not leak Good Thermal-Insulation Effect: This insulated lunch box uses a insulation-liner, which can keep warm for a long-time, and the heat preservation-time is 1 to 3hours