With its generous size, this beach towel gives you more real estate to stretch out. And when its time to dry off, it's created in soft and absorbent cotton fabric. Multiple styles available to suit any beachwear collection (each sold separately). This towel’s GSM is 380. GSM is Grams per Square Metre, which is the standard measurement for the weight and quality of towels. It usually ranges from 300 to 900. The higher the GSM, the heavier the towel.