You can’t be on the leading edge if you’re not willing to risk going over. These designs are based on the geometrical concept of the tesseract. In geometry, the tesseract is the 4-dimensional analogue of the cube; tesseract is to the cube as the cube is to the square. Matching backpack also available on Ebay, just search.

.: 86% Polyester 14% Cotton
.: Classic Fit
.: Assembled in the USA