GSM is short for grams per square meter. All fabrics have a
weight, and the standard measurement for the weight and quality of fabrics
(including towels) is grams per square meter. This number refers to the density
of the towel.
Towels can vary anywhere between 300 GSM and 900 GSM. The
lower the number, the lighter and thinner the towel. For instance:
300-400 GSM – In this weight, as noted, the
towels are lighter and thinner. But, depending on its use, you might want a
lower GSM for the gym towel or a kitchen towel. A lightweight, quicker-drying
beach towel might be around 350 GSM, for instance.
400-600 GSM – This is a medium weight. This
weight is great for beach towels, bath towels, guest towels and so forth. Each
consecutive gram weight –400, 500, 600– gets a little heavier, and a little
600-900 GSM – This is a premium, luxury weight.
The towel will be denser, heavier, more absorbent. It will probably take a
little longer to dry.
Other factors that will influence the towel’s softness and
absorbency are: type of cotton, whether the manufacturer uses a polyester blend,
whether the cotton is a single or double loop, and so on.