Sick of warm beers yet don't want to carry a conventional cooler box? Then there is an answer for you right here. Bag manufacturer Timbuk2 have come up with an innovative way to marry the cooler box with a messenger back in their Dolores Chiller Messenger Bag. The fully insulated interior of the bag keeps temperature steady and this bag holds at least 12 cans of beer or soft drink. Best of all is that this messenger bag is very low key and from the outside it does not look like a cooler box. Constructed with super durable ballistic nylon exterior matched with the waterproofed TPU lining for added functionality.