A cotton canvas shower curtain and hemp shower curtains keep water in the tub without a PVC plastic liner. They won't out-gas like vinyl curtains and they feel great next to your skin in the shower. Canvas and hemp shower curtains are machine washable and easy to maintain.  Just spread the curtain out to dry in your shower or tub. Pack cloth is another option.  It's made of durable, long-lasting nylon and may be the last shower curtain you'll ever buy!