Code Shop

from the Webkinz Guide

The Code Shop is the place to visit if you have a Feature Code. Feature Codes are codes that come with Webkinz merchandis, they 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 Feature Code from different Ganz products. You'll know a product comes with a Feature Code because it will have a Plus Symbol on it!

You have to use this to get webkinz from the eStore.