Give your window box planter a natural refresh with this small oblong outdoor coco liner. Molded from coir fibers, it drops neatly into 24in. oblong planters for a seamless fit. The breathable liner supports root health with airflow and drainage while helping retain moisture. Keeps potting mix contained and tidy on porches, patios and balconies. Great as a replacement liner for window box and railing planters in a natural color that blends with any outdoor decor.