Slipcase

A Slipcase is an outer box that holds another complete package. A typical slipcase closes on five sides and leaves one side open so that an inner Jewel Case, Keep Case, record sleeve, or booklet can slide in. It can unify the appearance of multiple products, provide extra printable area, and add some structural support, but it usually does not directly secure the disc.

Slipcases may be made of greyboard with printed wrap, folded card, plastic, or other materials. Rigid versions form an independent box shape and are common for books and multi-item sets; thin card versions fit a single disc case and mainly serve display. The opening may have a thumb notch or angled cut to help grip the inner item. If too tight, friction can damage the case face and sleeve; if too loose, the inner item may slip out during handling. In home video retail, slipcover, slipcase, and O-card are often used interchangeably, but the structures are not identical. Strictly speaking, a slipcase has only one open side; an O-card wraps like a paper band and is usually open at top and bottom; slipcover can also refer broadly to a thin outer sleeve. Product data that only says outer sleeve still requires judging by the number of openings, material, and whether it can stand as a box on its own.

Titles, numbers, limited-edition markings, or barcodes may exist only on the slipcase while the inner box uses standard retail printing. Removing the sleeve does not affect disc playback but may leave the edition appearance and identification incomplete. Later production runs of the same release may omit the sleeve or pair the same inner box with slipcases in different regional languages.

A slipcase is not the same as a box set. A single disc may have a slipcase without being a set; multiple items may be grouped in one larger slipcase as a box set. The former describes box structure; the latter describes the release relationship.