This puzzle consists of a 2x2x2 twisty puzzle on the inside, and a burr puzzle outer shell. The inner 2x2x2 is only solved when the outer shell pieces fit around it. The shell pieces can also be solved separately, so this is two puzzles in one!
The pieces fit nicely straight out of the box- tight enough to stay in, but loose enough to get out easily! It's based on a mini Eastsheen 2x2x2, which you can buy here- you will need to glue the pieces you receive from Shapeways on to one.