The Code Shop is the place to visit if you have a feature code. Feature codes are codes that come with Webkinz merchandise, that unlock special prizes - most of which you can't get anywhere else!
To unlock a prize, just visit the Code Shop, enter the feature code and click UNLOCK. You'll get to see what prize you have unlocked! You can get a feature code from different Webkinz products. You'll know a product comes with a feature code, because it will have the W Plus Symbol on it!