Escape to the seaside with the refreshing essence of a gentle ocean mist combined with hints of sea salt, white tea, and coconut. Cruelty-Free & Vegan Free from Formaldehyde, Parabens, Phthalates Smart Phone Enabled Flame-Free 2 Vials, Up to 240+ hours of scent How to Use: This exquisitely scented NEST x Pura Home Fragrance Diffuser Refill Duo includes two smart vials with Pura last™ technology that can be used with any NEST x Pura 3 Diffuser or NEST x Pura 4™ Diffuser, each providing up to 120 hours of scent. When used in a Pura 4™ diffuser, fragrance vial is automatically detected, making scent recognition simple. Weight:2 x .33-oz. Made in USA.