Air plants absorb nutrients from the air,no need soil,these holders provide good carrier for them. Tillandsia display stands can hold approx 1 inch small air plants, suck them on smooth surface such as windows, glass, fish tank, aquarium, etc. Air plant holder with the strong suction,reusable,many time use but without losing its sucking power. Comes with 20 pcs unique decorative air plant accessories,perfect for decorating your home,office. Tips:To sucking more stable,please soak these plant holders in warm water for a few minutes before use. size:22mm Material:plastic colour:White Package Contents: 20 x Air Plant Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.