Most general use microfiber is between 200-350 GSM. Towels with lower GSM, meaning they have lowe weights and lower pile, are are less likely to streak or lint on glass, and are a bit more aggressive. Heavier weights are more durable, and have a more gentle cleaning action. 300 GSM stands for the most popular weight of microfiber towels, such as the multi-purpose microfiber car towel.
Towels with a higher GSM, meaning 360GSM and over, like our plush microfiber towels, are typically used for surfaces that need to be treated with extra care (automotive finishes, musical instruments). The higher pile pulls debris away from the surface where it is less likely to scratch the during the wiping process.