If you do not see something you are looking for,
Twill Cap with RPI Math Formula
This Red cap has White embroidery with three math formulas you might see here. From Geometry, Chemistry and Mathematics, they spell out r p i in a clever way. Adjustable with a brass buckle on the rear.
send an e-mail to firstname.lastname@example.org or call us at 518-276-6555.
Website orders are picked from available stock on our sales floor in Troy, NY.