From: Watering and Irrigation : Capillary Watering Systems & Matting
This Water matting is the modern replacement for sand and gravel. The matting is 3/8 inch (10mm) thick and has a huge water holding capacity - it can hold 12 pints per square yard.
The other main advantages of this water matting are, it is lightweight so easy to install and also that it is easy to keep clean, so helping to prevent spread of disease.
Material - A chemically bonded non-woven material which exhibits a considerable retarding effect on the growth of algae.
Use - Water the matting by hand or by dripping directly onto it, the water will spread evenly across the matting maintaining an ample supply of water and a humid atmosphere for your plants.
Advantages - This black water matting hides unsightly soil spillage and can easily be washed when necessary.
Available in five widths -
6" (15cm) Wide,
8" (20cm) Wide,
10" (25.5cm) Wide,
14" (35.5cm) Wide,
& 22" (56cm) Wide.
Supplied in continuous lengths to avoid any wastage simply purchase as many metres as required and cut to size.