General description This 36 m² pond liner underlay is designed to provide optimal protection for your pond liner. It safeguards against damage from rocky ground, 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 acting on sharp stones in the water. Technical specifications Material: Polypropylene (PP) and PES synthetic fibers Weight: 300 g/m² Thickness: 3.5 mm Roll width: 2 m Puncture resistance: 1600 N Color: Grey Manufactured in Germany Geotextile robustness class: GRK 3 Rot-resistant Metal and needle detected Diffusion open Other information The Aquagart pond fleece is mechanically reinforced and is known for its exceptional quality, ensuring durability and reliability for your pond construction needs.