Protective cases for transporting a planar-shaped object includes a body including side, front, rear, and bottom walls coupled at edges thereof to define a housing having a cavity therein, an opening defined by uppermost edges of the side, front, and rear walls, and a lid secured to at least one of the uppermost edges of the side, front, and rear walls. The side, front, and rear walls and the lid each comprise a multilayer construction including an exterior layer, an interior layer, and at least one protective layer enclosed therebetween. The side, front, and rear walls include at least an impact-absorbing layer and optionally a rigid layer, and the lid includes at least an impact-absorbing layer.