Blister packaging, Blister Packs, or simply blisters, are terms used to describe several types of pre-formed clear plastic cavities typically used for securely packaging small consumer goods. Often these packages will hang on a merchandising wall. The components of a blister pack consist of a cavity, pocket, or bubble made from clear plastic and a backing (often a paperboard card). It is common to integrate a hanging element of various styles into either the plastic or the backing. Read on to see these effects.