A protective trading card sleeve includes a substantially planar first wall and a substantially planar second wall. The first wall can have a plurality of edges including a first edge. The first edge of the first wall can be continuous and non-angular. The first edge of the first wall can have a first edge length. The substantially planar second wall can directly face the first wall and can have a substantially similar configuration as the first wall. The second wall can have a plurality of edges including a first edge that at least partially aligns with the first edge of the first wall. The first edge of the second wall can be continuous and non-angular. The first edge of the second wall can have a first edge length.