Waterproof Oxford Cloth USB Heated Lunch Box Insulation Bag

1. Material: waterproof Oxford cloth
2. Weight: 200 grams
3. Size: 21x16x8 cm
4. Heat preservation function: automatically switch to heat preservation state when heated to about 50 degrees
5. Portable, large-capacity main bag, easy to hold daily necessities
6. Comes with USB socket, heating is more convenient. Long-lasting and durable zipper, smooth opening and close bite