Shop the most-loved graphic tees, henleys, and shirts for boys from Gioberti, Levi's, Adidas, Hanes, Wonder Nation, Wrangler, and many more. Guess is an American textile brand and retailer that runs on the values of love, respect and integrity. The company was founded in 1981 by the Marciano brothers, who hailed from the south of France. The company supplies clothing for all genders and age groups. Blue is seen as trustworthy and committed. There is always Guess Blue Shirts & Tees for boys for each occasion and matching. Explore the Graphic and Plaid types in Guess Blue Shirts & Tees for boys.