Malloom Single Keep Food Warm Stainless Steel Insulation Lunch Bento Box Food Container Bag With Handle Material: Stainless Steel Size: 19*14*6cm/7.5*5.5*2.4" Easy Clean,Practical,Low-Maintenance and Eco-friendly. Arched handle,more convenient to carry. It can keep the food warm 3-4 hours(But affected by your local Season,Weather and Temperature, the exact time may not reach this keep warm time)