These aren't just any party shirt. They're Technical Party Shirts! Lightweight, breathable, moisture-wicking, 4-way stretch and wrinkle resistant shirts built for your favorite adventures and obvi, parties. In collaboration with Party Shirt International. 
 
Unisex fit or Women's fit. The Women's fit has a shorter sleeve! 
 
P.s. You do not have to own a mountain bike to rock these shirts (: