I LOVE Micropuzzles! There are other brands that come in a tube, but not near the quality of Micropuzzles. The thickness is perfect for the size of the pieces. The pieces are not paper thin like you see in other brands. The pictures are clear and not fuzzy. Although the pieces LOOK the same, they are slightly different as only the "right" piece will actually click in place properly. I work on my Micropuzzles in a cardboard shoebox lid to keep the pieces in place and for portability if I don't finish in one sitting. Micropuzzles take between 1-2 hours to complete, with distractions. The Colored Eggs puzzle is clear and vibrant. Perfect for Spring!