You Matter Then You Energy Funny Science Math Physic T-Shirt-Art

Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 65% Cotton, 35% Polyester, Imported, Machine wash cold with like colors, dry low heat, You Matter, unless you multiply yourself by the speed of light twice, then you energy. The shirt is designed to be fitted, for a looser fit please order a size up, This humorous science tee shirt is a fun gift for physics student or teacher, professor, math student, kids, children, nerd, Lightweight, Classic fit, Double-needle sleeve and bottom hem