Enough for your normal and replacement needs; it is recommended to replace aromatherapy pads based on usage frequency. One Size: Our essential oil pads measure 45 x 25 mm / 1.78 x 0.98 inches and fit many humidifier models. Relax: Place our essential oil pads in your humidifier; these scented accessories help create a relaxing atmosphere or an uplifting environment. Easy to Clean: Our essential oil pad refills are easy to clean. Remove the scent pad from the scent box and rinse with lukewarm water. Dry the pad with a clean cloth and return it to the scent box to save time and effort. Long Life: Our pads are made of high-quality composite material, durable, reliable, and lightweight, designed to last for extended use. Color: White. Material: Composite material. Package Contents: 50 x Unscented Replacement Pads. Note: Only the items listed above are included. Other products are not included. Lighting and different displays may cause the color of the item to appear slightly different from the actual color. Measurement allows an error of +/- 1-3 cm.