One of the main concerns for many schools includes safety. Artificial grass is specifically designed to be safe for children and kids. With its technologically groundbreaking composition, artificial grass has proven to withstand high traffic and rough play without breaking down or eroding. Thus, small and large schools can enjoy such durability without worrying about degradation over time. Also, the infill layer helps to keep the turf cushioned for contact, as well as helping to maintain the uprightness of the blades. There has been controversy in the past about possible hazardous lead contamination with synthetic turf, however, after studies proved this to be false. Thus, concern about lead in synthetic grass can be put to rest, as the studies have proved no such risk. Other questionable aspects of artificial grass have included its reaction to hotter temperatures. Made with polypropylene and polyethylene fibers, many new artificial grass products are coated to withstand and further deflect heat, ensuring that the surfaces do not absorb all of the heat emitted from the sun and weather conditions. Also, watering artificial grass with a hose or sprinkler can reduce the heat for a few hours if necessary.