This design is of the Tesseract (a.k.a. Cosmic Cube) from the marvel universe. This design is a simple design like the tesseract from the marvel movies, such as in the Avengers. Attached is a version of a solid tesseract, and a hollow one, so that anyone can line the interior with LED's and conveniently store an arduino board or a raspberry pi board in in order to make a light up effect such as seen in the movies. This makes a great desk accessory for any marvel fan who loved seeing the tesseract in movies such as the avengers!