Air plants nutrients from the air,no need soil,these holders good carrier for . Tillandsia can hold 1 inch small air plants, suck on surface such as windows, glass, fish tank, aquarium, etc. Air plant holder with the strong suction,reusable,many time use without losing sucking power. Comes with 20 pcs unique decorative air plant accessories,perfect for decorating your home,office. Tips:To sucking more stable, these plant holders in warm water for a few minutes 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 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.