The last day of holiday should, by law, be spent in your pajamas.
The ski helmet, goggles and rifle were his own idea.
In his defense, here's a picture of the Critter taken at the same age, in a similar state of fashion-forwardism.
Not sure what it is with my kids and goggles. It must be because we live in The Future. I remember from the comic books I read as a kid that there would be more goggles in The Future.