MARK McGWIRE & SAMMY SOSA December 21, 1998 SPORTS ILLUSTRATED Magazine

The product is the December 21, 1998 Sports Illustrated magazine featuring Mark McGwire and Sammy Sosa on the cover. This issue was published weekly in English in the United States. The magazine falls under the genre of illustration and focuses on sports and outdoors. With a specific emphasis on the two highlighted athletes, this edition would likely contain feature articles, photographs, and illustrations related to their achievements and milestones in the world of sports.