34 GSM vs 38 GSM vs 40 GSM: What Is the Difference?

The GSM (weight) of polyester pongee affects how it performs in the lamination process. Here is a practical comparison.

34 GSM: Lighter fabric, suitable for applications where minimal weight addition is important. Softer hand feel.

38 GSM: Mid-range option, commonly used in standard mattress lamination. Good balance between weight and substance.

40 GSM: Slightly heavier, provides more coverage and substance. Suitable for applications requiring a more substantial base layer.

The right choice depends on your lamination process, the other materials you combine with, and your final product requirement. If you are unsure, tell us your application and we can suggest a suitable range.