... rubber crumb 2Noise and shock absorbend .Comfortable and protect grass from trampling. 3Easy to install Features:1. Made ... 2. Noise and shock absorbend .Comfortable and protect grass from trampling.3. Parking lots,garden,residential backyard,walkways ... Easy to install. Benefit:Heat reservation, Heat isolation , Grass protection, Easy installation Applications:Parking lots,garden,residential backyard, ...