We all love growlers but you have to be careful when carrying them around and getting them home to drink.  Growler carriers are nice but these sweet growler koozies can easily be printed all over inside and out with brewery logos and graphics.  Also allows you to pour your growler without the need to remove it from the carrier.  Seems like a great idea for breweries to sell or even give away to their pint club members to keep them coming back and help to advertise the brand.  Looks like a cool alternative to your typical growler carrier.  Checkout a bunch more designs and more info on the growler koozies here from Brewsuit.