These air fresheners are 4X3 in. Made of quality felt material, safe and non-toxic, no bad smell, easy to wash and dry quickly, not easy to deform and break, you can reuse them for a long time. you could add the essential oils on the felt hanging sheet and each felt hanging sheet is designed with a hole, then you could thread the elastic rope through the hole in the sheet and tie it on somewhere you like of your car, an easy way for you to use.
