Envelor Home and Garden Natural Coco Coir Grow Bag , Coconut Fiber Growing Medium in Easy to Carry Bag 100% natural and eco-friendly potting mix, made from sustainable coconut fiber husk particles Coco Coir grow brick expands up to 3 gallons and comes in a UV treated premium quality bag Easy to use, portable and ideal for greenhouses and home gardening High water holding capacity, increased moisture retention, mold and mildew resistant, repels pests and bugs Easy to work with, to customize and enlarge center, just trim with a scissor