Description: This air vent aroma stick is designed with center hollow design,which can add the air contacting area,help to spread the aroma. It is made of paper,is degradable,you can throw it in the garbage can,it is environment friendly. It comes with 10 refills,the fragrance is long lasting and non-irritation,so these 10 refills can be used for a long time. The prefume contains plant essential oil which is safe to use and barely have any irritation to the eyes and nose. It is easy for you to install in the air vent aroma clip,just open the end cap,insert the refill,then close the end cap. Specification: Material: Paper. Color: white. Size: 70*7mm. Note There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package included: Type 1: 10* Refill. Type 2: 1* Refill. Package Including .