The 49ers have already won at bitter cold Green Bay and at Carolina in the NFC divisional playoff round last week, and they know this is another challenging step in their quest for a return trip to the Super Bowl to chase the franchise's sixth championship.
And when it comes to Seattle's raucous "12th man" crowd, which even affects the home team at times,Stitched NFL Jerseys, Kaepernick offers a gentle reminder.
