Kick it into 4WD with Sphero Nubby covers. Turn your Sphero into the ultimate off-road robot in the color of your choice. Not only do Nubby covers give you a strategic advantage navigating gravel, water, and concrete courses, they also protect against scratches and scuffs. Game on.

Sphero Nubby covers work with all Sphero versions.

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• Shields your Sphero against the elements
• Provides unbeatable traction for all types of terrain
• Available in three unique colors: Sphero Blue, Cyber Yellow, and Adventure Orange

- See more at: http://store.gosphero.com/products/nubby-cover-1#sthash.53HN3vya.dpuf