It seems as if microbreweries popping up everywhere and where there is a microbrewery, there are growlers - and so this Growler Cozy was concieved… . to help you cover up the clinking they create in the back of your pickup truck! You wouldn’t want the church ladies to know it’s not really your recycling! This pattern can be knit with super bulky or bulky - if using bulky, double strand it.