Useful for the outdoor shower: curtains made from Sunbrella fabric. OutdoorFabrics.com offers a range of shower curtains made from weather-resistant fabric; prices start at $99.95 for a 72 inch square curtain.

Above: An outdoor shower with changing room; via My Scandinavian Retreat.

Above: A 72-inch square Sunbrella Shower Curtain is currently $99.95 at OutdoorFabrics.com.