Vinyl shower curtains are 100% waterproof. The sides and bottom are cut rather than sewn and eyelets are welded into the plastic. Because these curtains are made from plastic they should be wiped clean with a damp cloth and hung out to dry; they cannot be machine washed, dry cleaned, tumble dried or ironed.
PVC is a fully waterproof fabric which is both soft and strong. Designs featuring a clear background are generally printed on a PVC base sheet as this effect can be easily achieved using this material.