A Digipak is "a patented style of optical disc packaging" which have been designed to typically consist of a book-style paperboard or card stock outer binding, with one or more plastic trays attached to the inside, capable of holding a CD or DVD. The Digipak-style packaging is often used for CD singles or special editions of CD albums as such packaging is less resistant to abrasion than jewel cases, so it tends to show signs of wear more quickly. The standard 4 panelled Digipaks have a finished size of 139mm x 125.5mm.
Digipaks were among the first alternatives to jewel cases to be used by major record companies, as they are far more eco-friendly, their main material being recyclable. There were a number of shortcomings with the jewel case. The case is hinged on two brittle plastic arms, which often break if the case receives shock or stress due to being dropped. The teeth of the hub holding the disc are also prone to failure by snapping, something you don't experience with Digipaks. However, Digipaks still remain less common than jewel cases due to higher manufacturing costs and lower resistance to wear.
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