Basically, the box comes with a little plastic sleeve that slips over your Remote. Along the back and sides, a series of indented grooves allow you to attach these shark-fin style grips, which could potentially make for a more comfortable experience. There's four in the box, so you can make a wheel, a gun, and even fashion up a crossbow. Those are all good, of course, but they just aren't very long.
Hit the break for more close-ups of the Wii Custom Grip in action. We want to give it a try. No, really!