The boxed set includes all of their then extant standard studio albums, packaged as mini-vinyl replicas. In addition to the albums, and their extras, the set comes with a specially designed 40th Anniversary poster by Storm Thorgerson, featuring 40 Pink Floyd images.
The title is a reference to a line in the song "Have a Cigar": "Oh by the way, which one's Pink?" The box cover consists of a concept similar to that of Ummagumma—one side of the box shows a picture of a room with various objects scattered about inside it, with pictures of the main band members (Roger Waters, David Gilmour, Nick Mason and Richard Wright) on the walls, whilst the other side shows the same room in different lighting, with the objects and pictures of band members rearranged. Standing in the background of both sides of the cover is the dark silhouette of an individual, presumably that of Syd Barrett.