Marlen Manufacturing One-piece Solo® Ileostomy Unit 1" Opening, 11" L x 6-1/8" W, Beige, Large, 31Oz, Cloth-like Cover on Both Sides, Odor-proofA one-piece unit featuring a convex mounting ring permanently sealed to the pouch. No assembly required! The pouch is constructed of odor-proof materials and has a cloth-like cover on both sides. Available in stoma sizes from 1/2" to 1 5/8" (in 1/8" increments). Requires a separate pouch closure.