Mika and his sister Yasmine have done several design projects together and their latest collaboration with Pilot is one of my favorites for sure. I write a lot so I can have these colorful pens on my desk and actually use them all the time and I love it. As always the pretty limited edition package is as important as the product itself and just seeing these today cheered my day up immediately, happy writing indeed. Separately sold pens are available in many countries but limited edition boxes can be harder to find, I bought mine online from Netherlands. A couple of making of/behind the scene clips here and here.