We bought a pair of people, an orange backpack. The small bag in front can hold tableware, and the big bag can hold food. The heat preservation effect is ok, and it is ok for half a day, but I don't know how it got cold. Not if it's cold.
The price is a bit expensive. It costs more than 300 yuan after a 10% discount. I bought a set of tableware, a cup cutting board and a bottle opener. But the quality is good, mainly because it looks beautiful.