"Ultramax Deep Drainable Pouch With Aquatack Barrier and Kwick-Klose II Fastener 1-3/8"" Pre-Cut Stoma Opening, Transparent. Unique Petal Design Creates a Flexible, Comfortable Fit For All Abdominal Contours, Flexible Flange Creates an Optimal Seal. Ideal For Retracted, Flush and Hard-To-Fit Stomas."