There are many factors determine the towels absorption.
Length of loops, material, and weight.
Towels’ weight is Very important, but it does not mean there are no limits.
Too heavy towels will be stiff, and not easy to use. Washcloth’ s weight best range from 350gsm to 500gsm, hand towels range 400~550gsm, bath towels can reach 700gsm, and bath rugs can reach 1200gsm.