KENT, Wash. -- Official Super Bowl T-shirts were expected on store shelves Monday morning, after a Kent firm began printing them during the NFC Title Game Sunday night.

The Polar Graphics company is printing several shirts with the NFC Championship and Super Bowl logos.

A company executive says the plant produced about 30,000 T-shirts overnight and it will have printed more than 120,000 before the Super Bowl.

If Seattle beats Pittsburgh, Polar Graphics expects to print more than 300,000 Seattle T-shirts.