Our latest equation hoodie, created in collaboration with Dr. Trefor Bazett, features the SIR equation, from the Susceptible-Infectious-Recovered model, as its front print - perfect if you're passionate about math and its powerful role in real life situations. Product Features: • 50% cotton, 50% polyester • Unisex fit • Air jet spun yarn for a softer feel and anti pill • Drop shoulder style • Double fabric hood with matching drawstring • Front pouch pocket • Rib trim with spandex at cuffs and hem Care Instructions: • Wash inside out • Hand wash is recommended; otherwise, machine wash on a gentle cycle • Wash cold • Do not tumble dry • Iron on reverse • Do not dry clean