1.Nonwoven Inserts for Hanging Baskets: The trough planter liner is made of nonwoven felt, tearresistant and durable. Its good breathability and moisture retention provide a superior growing environment for plants. 2.Perfect Coconut Liners Alternative: The felt liner is more waterlocking than coconut liner, keeping the soil moist longer, breathable enough to provide the air circulation needed for plant growth. 3.Easy to use: Planter liners for outdoor plants are very simple to use. Unfolded the window box liners and placed in a window basket of appropriate size. After adding soil, plants are grown and appropriate amount of water is poured. Planter liner is also very convenient to store, and hanging basket liner can be washed with water, dried and folded for storage without occupying space. 4.Suitable Size: The size of planter box liner is 24 inches long, 7 inches wide and 7 inches deep, which is suitable for most window box. Planter liners for outdoor plants can be used for hanging baskets, fence baskets, window box, vegetable pots, wire plant holders, etc.