①This insulated cooler lunch bag has great function keeping cold/warm, because of 3 layers of insulation : outer layer is 600D high-density Oxford cloth; inside layer is Aluminum foil (food grade low thermal conductivity); mid layer is 5mm EPE foam (insulation, collision avoidance, cushioning)
②This cooler bag is convenient lunch bag for office work and students. Also, it is ideal picnic bag of drinks/beer/ice/milk/hot food for camping, hiking, BBQs, shopping etc.
③This lunch thermos bag equipped with waterproof zipper, will be more durable and smoother than other zipper. It can enhance the sealing and effectively reduces the energy loss.
