You've been a longtime supporter of the San Francisco 49ers and are looking for a new way to illustrate your ardent team pride. Accomplish that goal with ease by putting on this San Francisco 49ers Sideline Property Of performance T-shirt from Nike. The vivid San Francisco 49ers graphics on this tee will show everyone that you're the #1 fan. It's a perfect tee for game day because it features Dri-FIT technology, which helps wick away moisture from your body to keep you nice and comfortable.