Vinyl Magnetic Shower Curtain Liner With Metal Grommets. The modern look of polished metal grommets is an unusual feature and perfectly compliments metal shower curtain rings. The weighted magnets on the bottom prevents the shower curtain liner from bunching up or floating in water the magnetic quality also holds the liner closed and in place. The water-proof vinyl shower curtain liner protects fabric shower curtains and keeps them clean and dry. Vinyl shower curtain liners come in a variety of colors. This inexpensive bathroom accessory is a perfect companion every shower curtain in the home.