Hero Arts Paper Layering dies offer unique styles and designs around a new concept in paper crafting. Paper Layering allows you to cut normally, giving a pop-up style of cut, and then, after folding or curling the cut edges, the image reveals itself, giving a 3-D dimensional look to your paper. Hero Arts metal dies are made with precision cutting edges and sturdy constrcution, and are universally compatiable with most die-cutting machines. Two sweet hummingbirds in Paper Layering style.