From StarWars.com:
"Adapted from the original 1976 Ralph McQuarrie-designed triangular logo of Luke against a fiery red planet, StarWarsShop has re-imagined a Clone Wars version of this iconic symbol featuring Anakin and the Clone Wars title!

...

Composed of elements from McQuarrie's original illustration and new artwork of Anakin from Lucasfilm Animation, the triangle icon has been silk-screened onto the same yellow-tone style t-shirt that the original 1976 crew t-shirts were printed on. This is a great tee for both old fans and new alike! Get yours now exclusively at StarWarsShop!"