Stpatricks day comes but once a year march 17th to be a precise stpatrick is the primary patron saint of ireland and every year he is celebrated with a global day of drinking so grab a guinness don one of our t shirts and everyone of us can be irish for the dayhoodie design reads i shamrock boozeour hoodies are super heavy at 320g and made with 80 combed cotton and 20 polyester for exactly the right comfort and fit you want from a classic hoody