The irrigation mat prevents your plants and flowers from drying out too quickly. This is because the water is distributed evenly to the plants or flowers. Also less mold will occur, which is caused when a layer of water is too high.
The mats are the size of our watering trays and can absorb about 2 liters per irrigation mat on average. The mats also come with a weed barrier, to prevent roots from growing through the mats.