Like Keynes and his animal spirits (there's a long debate about whether that's the only good thing he ever came up with, but let's run with it), the "Go Ape" ring is there to remind you that you can be a little aggressive. Or, it's heavy enough that it would probably hurt if you needed to use it some evening. Again, not advocating that, but if it helps keep you safe and you can look cool at the same time, we'd say that's a win/win.
Material: zinc alloy
Size: Adjustable (starts around size 10)