Expected to be better isolated. Materials and size are great! Smart to do reflective surface, better than other brands doing it from dark meterials - attractive sun heat... anyway I expected better isolation, thicker thermo layer. testing the performance on direct sun with ice and cold drinks inside. hope it can stay cool for half a day on the sun. result - 1kg of ice and cold drink from freezer melted in 2 hours. Waste of money, do not buy if you need thermo cooler!
Very good product, good material, incredible fast shipment !