The teams unveiled the preliminary license plate designs after Gov. Jay Inslee signed a bill Friday to make them available.
Net income from the Seahawks plate will got to InvestED, a Seattle-based nonprofit that partners with schools to help kids from low-income families pay for clothes, shoes, school activity cards, testing fees and other needs.
Most of the money from the Sounders plate will benefit Washington State Mentors, an Issaquah-based group that helps youth organizations across Washington. The Association of Washington Generals, a group that promotes civic and veteran causes, also will get some money from the Sounders plate.