Personalized Beware The Ides Of March American Made T-Shirts. Beware the Ides of March. Funny Shakespeare quote American Made T-Shirt - White features The Bard himself in cool shades with Julius Caesar tragedy quote. Enjoy the comfort and durability of this 100% cotton t-shirt Born in the U.S.A. 5.4 oz., pre-shrunk 100% cotton. Heather Grey is a cotton/poly blend. Double-needle stitching throughout. . Seamless collar. Shoulder-to-Shoulder taping. Made in America.