Compact, lightweight easy to use essential oil diffuser. 
 
Just add a couple of drops of your favourite essential oil blend to the vent clip felt pad that is inside the locket. There is a hinge that opens the locket easily. 
Next, attach the whole locket onto the air vent in your car as in the picture. Then you are good to go. Adjust the level of essential oils that you use, as too much can be overwhelming in such a small space. Over a couple of days the scent will diminish as the essential oils evaporate. 
Store your essential oil bottle in a cool part of the car out of direct sunlight as essential oils are sensitive to heat and light. 
 
Specifications:
Material: 316L stainless steel locket clip with 5 fiber cotton refill pads.
Clip: 3 x 3cm (Dia x H).
Single refill pad: 2.1 x 0.3cm (Dia x H)