Polyester fabric shower curtains seem to be a fairly standard item. This is because the fabric has a tight weave, which makes it superior for printing designs. Some people, however, do not like the fact that polyester fabric does not breathe like natural fabrics. This is mostly true for cloths that we wear. For a shower curtain, however, I would think that this is a plus, because a 100% polyester shower curtain is somewhat water repellent but NOT water proof. Over time or with the shower water stream hitting the polyester curtain dead on, water would tend to migrate through those fibers, even though they are very tightly woven. This is why so many people use plastic as the liner.
Some people seem to dislike the feel of plastic liners on their skin. Or they dislike the smell of the plastic liners. Those people might opt for nylon liners, or, hey, how about a SECOND polyester curtain as an INSIDE liner to create a breathable ensemble - the water never gets completely through and has barely enough overall breathability to encourage faster drying a less mildew potential.
You can buy the functional plastic liner for as little as $3. A nylon liner? - I don't know. A second polyester curtain to SERVE as the inside liner? - same price as the outside decorative liner. Either way, I think the expected standard today where I live is that you have to use two curtains, if you want the best blend of function and form. Plastic is cheap for function. Fabric is more expensive for form. If your preferences are high end, then you choose fabric for both, .. possibly a nylon liner for inner, and a polyester curtain for outer.
I have NOT ordered an FAA shower curtain, but, again, I feel that it is such a standard item, I would be surprised if it did not match the quality of the less expensive fabric curtains that I have bought at retail stores. Keep in mind, that this is a specialty, print-on-demand design, and so the price, understandably is expected to be higher than those in mass retail outlets.
