Philadelphia is where it all began. Mk II was founded in an apartment on Chestnut Street in the City of Brotherly Love. Our founder, Bill Yao, was born and raised 13 miles outside of the first capital of the United States in one of her original 13 colonies. We designed this cap as a dual reminder of our origins as well as this nation’s foundational commitment to the ideals of life, liberty and the pursuit of happiness for all of her people.