Abstract: The interchangeable patch baseball cap is a baseball hat that gives the wearer the ability to swap out the front patch for another patch. Each patch can depict a company or sport logo, a slogan, or some other symbol of the like. Each patch is required to have a loop backing to connect to the baseball cap by hook-and-loop. The baseball cap is designed to be comfortable and utilitarian. The material of the cap body is breathable and somewhat stretchable to accommodate different shapes and sizes of heads. The bill of the hat is stiff to block the sun from the wearer's eyes.