Polypropylene mesh pond netting is a sturdy safe material to install over ponds to prevent leaves and debris from falling into the pond Constructed of 3/4 inch polypropylene strands bonded together, and UV treated for longer life Allows sunlight, air ventilation and moisture to help maintain the proper biological balance for all pond life. Easy to use and installs in minutes Stakes are not included 3/4" holes when stretched completly.