God Said Maxwell Equations and Then There Was Light - T-Shirt Modern fit t-shirts with a vintage super soft feel and tear away or printed label for extra comfort. 4.5 oz 100% Preshrunk combed - ringspun cotton t-shirts with a custom screen printed grapic on the front chest. Our logos are printed using eco-friendly plastisol or waterbased ink for a soft feel and to ensure color fastness and long lasting durability. Search shirtinvaders or check out our store to see our full product line. FREE SHIPPING options for all of our products!