A Retro Backpack Excellent And this 20 can capacity throwback backpack is not just an ultra-rad fashion statement, it's also actually a cooler As a wearable style, it'll make your whole getup ultra-cool while keeping refreshments even cooler. This backpack cooler is an official member of our Retro Collection, complete with a throwback design, like the rad aqua/purple color combo and a font you'd see back in the day.