These seem to be the new Seattle Sounders 2011 home and away shirt designs made by Adidas.
The badge design resembles a heraldic shield and consists of two layers which represent "the partnership between the ownership, the community, the players and the fans".
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The logo incorporates the Space Needle, an internationally recognized Seattle landmark. The official team colours are Sounder Blue, signifying the waters of the Puget Sound; Rave Green, representing the forests of the Pacific Northwest; and Cascade Shale, representing the Cascade Range to the east of Seattle.
Thanks to Phil