Wafts fragrance into your car without a plug, battery, or flame Adds a dazzling sparkle to your car Easy-open design Built-in clip base attaches to your visor, seat pocket, or air vent Pairs with your favorite car fragrance (sold separately) How to use car fragrance holder: 1. Open the holder at the base like a clamshell 2. Peel back the foil to disperse the scent 3. Place the refill into the holder with the film hanging out 4. Snap the holder back in place by pushing down on the top