Once attached to your vent, Refresh Your Car® mini diffusers allow you to adjust the fragrance level of your car. The smaller size allows you to put them in more areas of your car, without blocking the flow of air. Turn your car into a place that makes any passenger feel like Ohana with Hawaiian Sunrise that smells like tropical hibiscus, heavenly jasmine and good times with people you love, I love you person who just honked at me.