Objective description and evaluation of sails is a complex and demanding task, especially nowadays when a great number of fibres and sailcloth constructions are present on the market. While some of sail's quality descriptors like resistance to weathering and forces are well explored and explained some of them e.g. sorption properties are still not fully clarified. So, in this paper we put our attention on sail's sorption properties and their possibilities to become sail's care quality indicator.