Make sure your car always smells clean and fresh with the Little Trees Caribbean Colada air vent freshener. It is designed to work with a car's vents to spread the scent throughout the vehicle. Just open up the pack and place the Caribbean Colada air freshener on the vent blade. While using the heat or the air conditioner, you'll smell the scent of the Caribbean. They use StediScent technology, so they always have a clean smell. They last up to 60 days, so you can count on them for several months. This pack of four provides enough to put one in a few different cars or have some left over for when you need to replace one.