Made of high quality HDPE material,durable,strong,lightweight and easy to use Will withstand a variety of weather and water conditions,you can avoid the hassle of regularly replacing this part of your pond Resistant to UV,sun-proof waterproof,sunlight and temperature and will not crack at all.It's also non-toxic,and is safe for plants,fish and other aquatic life High resistance; Its high tensile strength and high tear and puncture resistance make it exceptionally strong Suitable for fish ponds fountains waterfall water gardens