A CSL (Charter Seat License) is a license that must be purchased for some of the best seating areas at Lumen Field in order to become a season ticket holder for the Seattle Seahawks. A CSL owner has the right to purchase season tickets from the ticket office each year.
Why would I buy CSLs on the Marketplace?
In order to purchase season tickets for some of the best seating areas you are required to purchase CSLs, but the ticket office is sold out. You can purchase CSLs from a current season ticket holder on the Marketplace and become the new season ticket holder for those exact seats.