Natura® Drainable Pouches (Compatible with Natura® Skin Barriers) Natura® drainable pouches are fast drying. With streamlined body contour panels, low-profile design, and minimal headroom, they distribute pouch content evenly and away from the stoma. All drainable pouches have a wide tail opening for easy emptying. The Natura® drainable pouches are also available with the InvisiClose® tail closure system and with a filter. The InvisiClose® clipless tail closure offers double security, ease of drainage, comfort and cleanliness.