Every jersey has a logo of the sponsors that are financial supporters of the team. Other than the logos, a jersey will include the number of the player, placed on the back, as well as the player's last name (above the number).
The number is unique for every player and is associated with them like it's the case with #Kevin #Durant #jerseys number 7. https://www.basketballjerseyworld.com/collections/jersey/kevin-durant
