Heavy duty double layer design with PVC liner covered in extra strength fabric Conserves 70% water by getting water directly to root and avoiding evaporation 100% Environmental friendly weeper hose vinyl for vegetable gardens and plants Consistent seep throughout entire length of ...Heavy duty double layer design with PVC liner covered in extra strength fabric Conserves 70% water by getting water directly to root and avoiding evaporation 100% Environmental friendly weeper hose vinyl for vegetable gardens and plants Consistent seep throughout entire length of hose (Works Best At About 25 - 30 PSI) Start with a very small amount of water and adjust the pressure until the water drips slowly but steadily along the entire length of the soaker hose.