Here’s what sails are made of: Sails are comprised of sailcloth. Here’s the scoop on the illusive sailcloth that holds your sails steady. As a sailor, one needs to understand the types of sailcloth available because the material is not a one size fits all. Sailcloth consists of fiber material and film, which in turn, creates its variety.
Most sailors identify sailcloth by specific brand names or, in other cases, by the material and size properties.