The DIN ( Deutsches Institut fr Normung) is a safety setting on ski bindings that determines the amount of force required to release the binding in a fall. It is important to have your DIN set correctly to ensure that your skis release when they should, but not too easily.
The DIN setting is based on a number of factors, including your weight, height, skill level, and the type of skiing you do. A higher DIN setting is required for heavier, more aggressive skiers, while a lower DIN setting is appropriate for lighter, less experienced skiers.