Nike and the National Football League on Tuesday unveiled the new line of league uniforms.

You’ll notice the biggest changes in the uniforms of the Seattle Seahawks and the Chicago Bears.

The Seahawks will don darker-colored blue jerseys, with a more aggressive-looking hawk on the helmet.

A stripe down the side of the pants will symbolize the team’s “12th man:” the fans.

The Bears are enlarging the GSH initials on their uniforms in honor of former coach George S. Hallas.

The new Kansas City Chiefs uniforms stay true to tradition, but the so-called “TV numbers” have been moved from the sleeve to the shoulder.

Nike took over the NFL uniform contract from Reebok on April 1, which held the contract for 12 years.

The company says the Nike Elite 51 uniforms employe lighter fabrics, a more contoured fit and four-way stretch materials. The NFL’s conservative team owners had final say under guidelines set by the league.