Replica jerseys are a full-button jersey that feature the same design as authentic jerseys, but are made of less durable fabric. Unlike authentic jerseys, replicas do not have the MLB logo on the back and rather than being sewn on, letters and patches are of tackle twill that is ironed or silk-screened to the jersey.

Nike authentic jerseys - also known as on-field MLB jerseys - are exactly like the ones your favorite players wear on game day.

Majestic Athletic is an American textile company headquartered in Easton, Pennsylvania, with manufacturing facilities in Easton, Pennsylvania.

The Yankees, Giants and Red Sox have continued the old practice of not having names on the home jerseys.

Replica - These jerseys have the same logos and badges as authentic jerseys, however, they are embroidered on, so they have a more weighty look and feel.

Replica jerseys make use of conventional, affordable fabric technology designed to keep you cool and comfortable. This material is typical fabric weight. Authentic jerseys make use of high-performance, sweat-wicking fabric.

Authentic jerseys have a Nike logo on the right shoulder. The name and numbers on the back of the jersey will be a thin fabric stitched to the jersey, not a heat-pressed vinyl. You should be able to see the stitching of the name and numbers on the inside of the jersey.

MLB jerseys worn on the field have been made out of double-knit polyester since the early 1970s.

The partnership will mean all on-field uniforms by the league's players will be manufactured by Beaverton, Oregon-based Nike, feature the signature Swoosh, and include baselayer, game-day outerwear and all training apparel for 30 teams in Major League Baseball.

polyester MLB jerseys worn on the field have been made out of double-knit polyester since the early 1970s.

The home uniform is white with distinctive pinstripes and a navy interlocking "NY" at the chest. The away uniform is gray with "NEW YORK" written across the chest in navy blue outlined in white and navy-white-navy stripes on the sleeve cuff.

A replica jersey is not a fake or counterfeit item. It is an officially licensed product that is produced to a high standard and designed to resemble the jersey worn by the players.

White – Upper Body: 91% polyester/9% spandex; Lower body: 88% polyester/12% spandex. Mesh – 100% polyester.