DLO?s Shell is this comparative review?s starting point because it is the most basic, and typical, of all of the designs here. It consists solely of two pieces of clear hard plastic?one for the third-generation nano?s face, and one for its sides and back. They snap together with four clips, two each on the left and right sides, and like all of the other cases here, the completed Shell covers all of the nano except for its Click?