General description This 46 m² pond liner underlay is designed to provide optimal protection for your pond liner. It serves as a reliable barrier against damage from rocky soil, burrowing animals, and root growth from trees and shrubs. The underlay can also be used above the pond liner to prevent damage caused by swimming activities or high water pressure on sharp stones. Technical specifications Material: Polypropylene (PP) and PES synthetic fibers Weight: 300 g/m² Thickness: 3.5 mm Roll width: 2 m Stamping puncture resistance: 1600 N Color: Grey Manufactured in Germany Geotextile robustness class: 3 (GRK 3) Rot-proof and detector tested Other information