"Futuristic boutique" is the term X-Squared staffers like to use in describing their athletic shoe shop. The description fits this two-story, industrial-style interior with bright displays of sneakers where you might otherwise expect spacesuits. The store carries many popular brands like Nike, Jordan, Kid Robot, Crooks and Castles, Supra, Vans and Passport, among others. X-Squared is one of the only stores in the area carrying Nike Gladiator sandals. In addition to shoes, you'll also find athletic apparel and accessories such us Married To The Mob T-shirts and many hip varieties of the iconic Boston Red Sox ball cap.