A personal seat license, or PSL, gives the holder the right to buy season tickets for a certain seat in a stadium. This holder can sell the seat license to someone else if they no longer wish to purchase season tickets. However, if the seat license holder chooses not to sell the seat licenses and does not renew the season tickets, the holder forfeits the license back to the team. Most seat licenses are valid for as long as the team plays in the current venue.