1. STURDINESS-Improved new material different from normal terracotta, strong but still release water enough for soil. 2.EASY TO USE-Just recycle any long neck bottles, such as wine bottle, glass beer bottle, soft drink bottle etc., not need any more fittings required. Place this device into soil then stick with bottle full of water, that's all. 3.for these watering spikes, water slowly sipped to make plants grow , healthier, especially for areas there's air almost no humidity. 4.Free your hands to water everyday and excellent work while you are away or on vacation for a few days, it helps to of your plants without casualties. 5.use to OUTDOOR & INDOOR-Applicable to both outdoor and indoor plants, if only your planter can hold it and not lean down after placing a bottle full of water. Material: ceramics colour: as shown Package Contents: 6 x ceramic water infiltrator 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.