Not all folding knives have a glass breaker feature, but some models do. A glass breaker is a pointed or rounded tip on the handle of the knife that is specifically designed to break glass in emergency situations, such as car accidents where windows need to be shattered for escape. However, its important to note that not all folding knives, especially smaller or more compact ones, are equipped with a glass breaker. If this feature is important to you, its best to look for a folding knife model that explicitly mentions a glass breaker as part of its design.