An innovative system for optimum insulation. Thanks to the combination of different technologies, this product provides the best performance on the market. 1 How should I use my cooler box? To use your cooler box: 1/ unscrew the two valves and wait a few minutes. 2/ you can increase insulation by blowing into the valves. 3/ close both valves before use. 2 How should I store my cooler box? To store your cooler box: 1/ Open both valves 2/ close the zip on your product 3/ set the cooler box on its back 4/ grasp the sides of the cooler box with your hands 5/ press to release the air. 6/ flatten without releasing the sides 7/ press down on the top to compress as much as possible 8/ close the valves 9/ tie up the whole bundle using the elastic band on the side of the product. 3 How does my cooler box work? Three technologies at your service! The material used on the inside helps to keep in the cold. The outer fabric is a material patented by Decathlon. It deflects solar radiation and reduces the impact of heat. The self-inflating technology provides optimum insulation. The combination of three elements provides unparalleled levels of performance and insulation. This system has been patented! 4 Test and performance level! Your product was subject to a comparative test in an external laboratory to ascertain the level of performance. Inside a heat chamber at 32°C, water at a temperature of 5°C is placed inside each product and the time it takes for the water to reach 15°C, or a difference of 10°, is measured.We have pitted out product against a stiff cooler box and an electric cooler box listed on the market. The results are: 6.5 hrs for the stiff model, 8hrs for the electric model and 11hrs for the Quechua model.