Big Bertha keeps Callaway Golf swinging. With its flagship driver named after a WWI cannon, Callaway makes premium-priced golf clubs that are popular with amateurs and professionals alike. The company's other drivers, as well as its fairway woods, irons, wedges, hybrids, and putters, are sold under the Callaway and Odyssey names. It also makes Callaway golf balls, golf bags, and uPro-branded GPS range finders. At the top of the golf market, Callaway designs apparel and shoes and licenses its name for travel gear, eyewear, and other golf accessories. Its products are sold through its websites and in more than 100 countries by golf pro shops, sporting goods retailers, and mass merchants.