Enough for : Enough for your normal and replacement; it is recommended to replace aromatherapy based on frequency of ONE SIZE: Our essential oil pads measure 45 x 25 mm / 1.78 x 0.98 inches and fit many humidifiers. Relax: You can place our essential oil pads in your humidifier, these scented supplements help create a relaxing massage environment or create an uplifting for you EASY TO CLEAN: Our essential oil pad refills are easy to clean, please remove the humidifier scent pad from the scent box and rinse with lukewarm water, dry the pad with a clean cloth and put it back in the scent box to save your time and energy. LONG LIFE: Our pads are made of high-quality material, durable, reliable and serviceable, and lightweight, so you can easily the essential oil pads for your humidifier, which can last you a long time color:White Material:composite material Package Contents: 50 x Unscented Replacement Pads Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.