HardShirtz is a charity project focused on metal mash-up t-shirts. To get a better idea of what a metal mashup t-shirt is take a look at the couple of t-shirts from HardShirtz below. Did I mention they are a charity project? Yes, 100% of the profit from each HardShirt supports young, promising bands. You can check out the project homepage here (Autoplay audio warning!) or visit their store.