Introducing the cup product cup, a sleek and polished addition to any mathematician's mug collection. Made from lead-free and BPA-free white ceramic, this glossy-finished mug showcases the elegance of algebraic topology with a repeating pattern of the cup product. Available in two sizes – 11oz (0.33 l) and 15oz (0.44 l) – it's perfect for that essential coffee boost in the morning. The C-shaped easy-grip handle is an homage to the shape of the cup product and also ensures a steady hold even during the busiest of days. Elevate your coffee breaks with a touch of algebraic topology and enjoy your favorite beverage in a mug that celebrates the ring structure available with cohomology.