Marlen E-Z Drain™ Two-Piece Urostomy Drainable Pouch Regular, 8-5/8" L x 5" W, 15 oz. Capacity, Clear, Lightweight Plastic Marlen E-Z Drain™ Urostomy Pouch is sealed in Push-Pull valve which makes the pouch easy to use. It is constructed of lightweight plastic and requires no separate fittings but requires separate mounting ring.