Soft Infiltration Drainage Solution: Flexible drainage pipe integrates water absorption water permeability and drainage. Allowing rainwater to soak away into the surrounding soil and store it. In the season of low rainfall it can store rainwater in the soil. In the season of heavy rainfall it can discharge excess rainwater to where it is needed Polyester Drain Pipe with Steel Wire: The outer layer of flexible Drainage Pipe is made of non-woven filter layer and polyester fiber which ensures effective filtration and prevents sediment from entering the pipe. Better water permeability for all-round penetration. And built-in steel wire ensures the pipe is strong enough to cover soil or gravel Lightweight and Easy to Install: The perforated drain tube are lightweight making them easy to transport and handle and can be laid manually significantly improving construction efficiency and reducing costs flexible easy to stretch bend and curve itself to your exact specifications Extension Length: You can connect two permeable pipes directly for extra length or you can use a pvc pipe to connect(Excluding pvc pipe). You don't have to worry about leaks because its function is to penetrate Versatile Applications: This outdoor Infiltration french drain pipe applies to various scenarios railways airports highways sports fields parks tunnel retaining walls roadbeds and pavement, Manufacturer: Kanduo