High tensile strength underlayment is easy to shape to your application. * Provides a stable and lasting foundation for Koi ponds, water gardens and waterfalls. Enhances soils stability and controls erosion * Use inside the water feature to pad large rocks and structures. It can be used in landscape beds and retaining walls too. * Virtually indestructible; unaffected by hydrocarbons, mildew, rot & freeze-thaw cycles. Diffuses gas and fluid build up. * Made in the USA! Ships via FedEx Ground Most of the Time or Freight Truck for Our Largest Pieces