Biodegradable Colostomy and Ileostomy Liners, large, 100 per box. Works best with flange/pouch opening diameter of 2-3/4″ (70 mm). Colo-Majic Liners are flushable. When youre ready to empty your pouch, you simply remove the liner, deposit it into a toilet and flush it away. There is no messy clean-up, no water is needed and the time taken to accomplish the change is very quick. Once the used liner is disposed of, you simply insert a new liner into the same pouch and reapply it to the flange. Liners are flushable and 100% biodegradable.