Boston Red Sox Nike Breathe Polo - Navy.  Regular Fit: Not too slim, not too loose. Designed with a relaxed fit through shoulders, chest and waist.  Sizing Tip: Product runs true to size. For a looser fit, we recommend ordering one size larger than you normally wear.  Material: 100% Polyester,  Dri-FIT ® technology wicks away moisture, Neck taping with graphics, Side slits at bottom hem, Screen print stripe across back yoke, Heat-sealed graphics, Sublimated fabric, Three-button placket, Short sleeve, Machine wash, tumble dry low, Tagless Collar.