Every modern astronomer knows that objects moving toward the viewer at a percentage of the speed of light will exhibit a blue-shift as the frequency of light increases in energy. Objects receding from the viewer exhibit a red-shift as the frequency decreases it's energy. This is much in the same way that say an angry SUV owner's horn honking as it passes by you at a high rate of speed will change it's pitch from higher to lower as it goes by (hopefully you weren't impeding her right to get 8 miles per gallon). Anyway, the name we call this distortion of light and sound is the Doppler shift. Our jersey is inspired by this principle. Imagine going so fast that people in front of you see a blue jersey and those behind you see a red one. Well, imagine no more.   The Doppler Shift Jersey (front view) When seen from the front, the jersey presents itself as blue. This clearly means you are traveling at a significant percentage of the speed of light. And you say you can't sprint! See below for ordering information. As a fitting fare-thee-well to those you pass, Each Jersey has emblazoned on it the famous Doppler equation on the back pocket, so those algebraically-minded can contemplate the reasons why your jersey appears red. Next: Republic of Anaerobia -> The Doppler Shift Jersey (the red-shifted view) From behind, the jersey appears red. Red like you are some galaxy hauling ass away from the earth. 3/4 length hidden zipper, 3 roomy pockets on the back for your TI-36X™ calculator. Made of Aries Micro Plus sublimated fabric, Designed and Manufactured in California. Ships with a mess of Doppler Shift temporary tattoos (which were made in Arizona since you were wondering). $69. Unsure of your size? Click here.