From the shop Tornado Republic: Taking the tshirt world by storm:

One of a kind and hand drawn. Ninja with deadly skills, weapons, and powers of stealth.
Sizes: S,M,L,XL,2XL,3XL.
Colors: Black,Cardinal,Navy,Military Green,Red,Royal,Brown,Charcoal

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Everbody needs a personal ninja.  This ninja is ready to stealthily protect you from all danger.  With this ninja shirt your friends will envy your and your enemies will fear you.  With a rising star emblazened behind him the ninja is ready to do all of your bidding. 

Note:  Will not protect you from danger.   May not help you out at all.