College Men's Floral Button Up Beach Shirt. This men’s beach shirt is made of 100% cotton and is garment washed to give you that ultra-comfortable lived in feel. This floral Northwestern Wildcats features a fully sublimated Wildcats graphic along with a full button up front as well a fully functional front pocket. This tropical NU shirt is sure to be an eye catcher during your next trip to the beach on in the stands during Northwestern game day. NU Wildcats Officially licensed Northwestern Wildcats fan gear.