This authentic Nike NFL on-field alternate jersey features the San Francisco 49ers' bold black base with vibrant scarlet red numbering and lettering, honoring quarterback Brock Purdy (#13). Constructed from breathable, moisture-wicking Nike Dri-FIT fabric, it includes official NFL licensing (NFL shield at V-neck), team name '49ERS' above the front number, and player name 'PURDY' across the back. The design incorporates signature 49ers elements: red shoulder numerals (13), three red stripes on each sleeve, yellow Nike Swoosh logos on shoulders, and a tailored athletic fit for optimal movement. Officially licensed by the NFL and manufactured by Nike, this jersey meets on-field standards for durability and performance. Ideal for fans seeking game-day authenticity or streetwear styling, it pairs effortlessly with joggers, shorts, or layered under jackets. Perfect for gamedays, tailgates, or casual urban wear—celebrating Purdy’s rise as the 'Mr. Irrelevant' turned Super Bowl contender. Includes size tag (Medium) and hangtags confirming authenticity.