Buy an xyHt Shirt
Our shirts are printed on high-quality Hanes Tagless 100% ComfortSoft cotton. Shirts are $14.95 each and ship for $4 to U.S. addresses. If you’re ordering from outside the U.S. or purchasing multiple shirts, please indicate that in our order form below, and we will work with you to get your shirts ordered and delivered!

Front says, “Adding the 4th dimension.”

Back says: Left/Right, Fore/Aft, Up/Down, Time