This is the Nike Air Trainer 1 Mid Premium NRG "BB51" in the black color way. This pair released as a part of Nike AT1 "BB51" pack which featured this black on black pair and a vachetta tan one. The "BB51" pack was released to commemorate Nike founder Bill Bowerman who was a multi-sport athlete and wore the number "51" on his football jersey for the University of Oregon in 1929. This pair features a mostly black on black color way with metallic gold accents. The leathers used on this pair are of the highest quality, hence the premium title. On the back heel tab the Nike Air is replaced by an embossed "BB51" logo. Be sure to add this pair to your collection today.