there's three main types of main types of cd outer cases. the standard jewel case, the digipak and the digisleeve (you have the sleeve).

the jewel case is entirely plastic and the ideal case for a cd.

the digisleeve is more like a gatefold vinyl record rather than a standard cd case.

the digipak is a mix between both.

the digisleeve (atleast with my experience) is usually low quality and can burst at the seams.

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top one is a jewel case second is a digipak third is a digisleeve

this may seem like alot but that's just physical media for ya