Wii Fit Exercise Ball?

[hentai_11]

Viper1 said:

 Notice how the product is titled:

Nintendo Wii - Fit Exercise Ball

The hyphen seperates Wii and Fit.  That means it's not Wii Fit but 2 seperate entities.  Nintendo Wii and Fit Exercise Ball. 

Intresting. But this would still mean the Fit Exercise Ball has something to do with the Nintendo Wii. I know that you can use a Fitness Ball in games like My Fitness Coach. But why does this one have spike-like things and what is the pen like thing?