Underlay off the roll, sold by the metre (2 metres wide).

Protective Matting is produced from a strong non woven man made fibre, which is rot resistant and ensures maximum protection for your liner from stones, rocks, root penetration, or sand erosion, beneath the liner.

Thickness of underlay ; 1mm
If you order 5 metres you will receive 5 x 2 metres (10 square metres) etc...
If you order 20 metres you will receive 20 x 2 metres (40 square metres) etc...