My ds has saved up some money and wants to buy a mini cooler out of Argos for his room. It is only £12.99 and is on offer. He wants to keep drinks in it but I am not sure what is the difference between a mini fridge which is obviously more expensive and a cooler. Would a cooler keep drinks cold indefinitely or are they just for things like camping trips? Sorry to sound thick but any advise welcome. It is so rare for ds to actually save money so I don't want him to be disappointed.