The black flexible hose is made of flexible and durable PVC material perfect for a variety of applications such as water features, pond filtration equipment, garden tanks, sump pumps and more. The UV-resistant material is ideal for improving flow rates. By preventing algae from growing inside the black hose, it ensures a smooth flow of water. The black color also makes the hose suitable for hiding around the pond or garden. The ribbed design makes it easy to cut to precise sizes and the grooves prevent the hose clamp from slipping. It also strengthens the wall of the hose to prevent kinking, but is still very easy to bend to reach difficult places. Long service life and interface compatibility.