Ease your mind and soothe your spirit with this NEST x Pura Smart Home Fragrance Diffuser Refill Duo featuring notes of rosewater, geranium, salted amber, and white woods that leave you feeling comforted and relaxed.    Cruelty-Free & Vegan Free from Formaldehyde, Parabens, Phthalates Smart Phone Enabled Flame-Free 2 Vials, Up to 240+ hours of scent Made in USA How to Use  This exquisitely scented NEST x Pura Smart Home Fragrance Diffuser Refill Duo lets you replenish your current fragrance or switch to a new one with any NEST x Pura 3 Diffuser or NEST x Pura 4™ Diffuser. Includes two vials, each providing up to 100 hours of scent. Details  Weight: 2 x .33 oz | 10 ml