Transpiration serves to evaporatively cool grass as the escaping water vapor carries away heat energy. Unequaled Hollow blade design by GST is unlike anything on the market. In plants, close the pore and leaf surfaces are dotted with stomata (openings or holes) bordered by guard cells that open. Therefore, lessens the temperature of a lawn, which helps to keep moisture inside stems longer and, hollow blade technology mimics the same process. The hollow vein in the center of the grass blades makes up not only for the rightfully realistic look of the turf, cool in hot climates and but also supports its ability to keep the temperature of the lawn stable. A process that cools plants, occurs through the stomatal apertures, transpiration.