The Classic range is made from 100% cotton, making for a soft, absorbent bath towel. The complete range includes a bath sheet, bath towel, hand towel, and face cloth. Sold separately. This towel’s GSM is 450. 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.