What it is: A smart diffuser fragrance refill for your Pura Smart Home Diffuser Device that will fill your home with the woody scent of Frasier Fir. Made with Puralast™ technology, the smart vials work with your diffuser to account for the size of the room and your desired intensity to intelligently scent your space for up to 120 hours.Fragrance story: The aromatic snap of Siberian fir, heartening cedarwood and relaxing sandalwood combine to create a familiar just-cut forest fragrance that evokes warmth and comfort. Style: Woody and aromaticNotes:- Top: Siberian fir- Middle: cedarwood- Base: sandalwood