The DK2 has adjustable straps on the side and top of the headset. You can also adjust the distance between the end of the headset and the lenses; you’ll want to increase this distance if you’re wearing glasses by pulling the foam part of the headset away from the display side. Avoid scratching the lenses, especially if you wear glasses!

The most common strategy is pulling the elastic bands over your head, letting them rest on the back of your head, and then pulling the headset down over your face. You can make further adjustments from there if the DK2 is loose or the image is blurry.