KLM Seat Selection is the process by which passengers can choose their preferred seats on KLM flights. This service allows passengers to select their seats according to their preferences, such as window or aisle seats, proximity to the front or back of the plane, and proximity to the emergency exit. KLM Seat Selection can be done during the booking process or at a later time through the airline's website or mobile app. By selecting their seats in advance, passengers can ensure a comfortable and convenient travel experience.