Coco coir is available as loose fibers, sheets, or pre-formed liners that fit neatly into your containers. Not only do sheets and pre-formed liners come in multiple shapes and sizes, but coco liners are also flexible, making them easy to fit into your favorite hanging basket. Coco liners, on the other hand, combine the best features of the most popular plant liners into one convenient and effective product. If you're looking for the best plant liner for your garden, donâ??t look any further than a quality coco liner! Finding the right balance of moisture is key to gardening success. Not enough water and your plants wither and die. Too much water and you risk root rot and fungal growth. Unlike their alternatives, coco liners can regulate your soil's moisture levels so that plants stay healthy. Coco liners can hold up to 8x their weight in water, then slowly release it as the soil dries out. This makes watering your container garden a lot easie