Material:Plastic.Size17*28.5cm/21*32.5cm/21*40cm; Capacity:1L/2L/3L. PLANT PARTNER: This eco-friendly watering system will keep your plants healthier by not over watering and flushing away soil and nutrients that your plants need, promoting healthier roots EASY TO USE: Fill the bag with water and connect the water pipe and the drip arrow;Insert the drop arrow into the plant pot (near the root).The water flow speed is arbitrarily controlled, faster or slower, saving water, simple and practical.