What does fabric weight mean?

What does fabric weight mean?

Fabric weight refers to the actual weight of the fabric of which a particular bag is constructed of. Fabric weight units may be listed in ounces (ounces per square yard) or GSM (grams per square meter). Fabric weights correlate closely to overall bag weight carrying capacity or Safe Working Load (SWL). Higher SWL bags will have higher fabric weights. Conversion (1oz. per 34 GSM).