Sturdy: New upgraded material different from normal terracotta, sturdy but still enough water for soil. Easy to Use: Just recycle any long neck bottles, such as wine bottles, glass beer bottles, soda bottles, etc. No need for extra fittings. Place this device into the soil and then stick it with a bottle filled with water, that's it. Healthy Roots: With these watering spikes, the water sips slowly to make plants greener, healthier, especially for areas where the air is almost without moisture. Plants' Sister: Free your hands to water your hands daily and great job while you are away or on vacation for a few days, it helps to take care of your plants without any relaxation. Outdoor and Indoor: Applicable to indoor and outdoor plants, if only your pot can hold it and will not lean after placing a bottle full of water.