All you then have to do is position those second and third discs elsewhere in your home. (pocket-lint.com)
Target 3 - Disc Set — Includes The Divergent Series: Insurgent on Blu - ray, DVD, and Digital HD with third disc of bonus features exclusive to Target (theyoungfolks.com)
Some of this material fuses into a larger third disc that surrounds both. (newscientist.com)