This exquisitely scented NEST x Pura Home Fragrance Diffuser Refill Duo includes two smart vials with Puralast™ 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.
