Nike USA's 2014/2015 official home player version Authentic shirt. Composed of Dri- Fit polyester and has breathable mesh fabric that delivers optimal ventilation. This ultra-soft Dri Fit shirt features laser-cut side panels for ventilation. Engineered mesh back provides enhanced breathability and contributes to this jersey's light weight. Classic pinstripe polo design reflects classic American style. Embroidered Nike logo and USA team crest. NOTE: Tight fit, which means any shirt classified as Authentic will run small. The authentic is the actual piece that is worn on field.