Designed to seamlessly integrate with the ECOYA Plug-In Diffuser, the Fragrance Flask attaches effortlessly to the Plug-In Diffuser and fragrances your home for up to 700 hours. Crafted from glass, the 24mL flasks are fully recyclable. Simply replace the Fragrance Flask to switch scents. ECOYA Plug-In Diffuser sold separately. Made in New Zealand