Caffeine Theory: E = mc² Reimagined パーカ

Stay cozy and clever with this hoodie featuring the iconic formula E = mc² paired with the playful subtext energy = milk × coffee². A perfect blend of science humor and coffee culture, this design is ideal for students, engineers, baristas, science lovers, and anyone whose daily energy depends on milk and coffee squared. The bold, high-contrast artwork looks great on all hoodie colors and gives off a smart, stylish vibe.