Opening: Cut-to-fit, up to 2-1/2"(up to 64 mm) with 12" Length A one-piece, drainable pouching system designed to be opened at the bottom when emptying. The Flextend™ barrier is a durable erosion proof extended wear skin barrier. The Lock 'n Roll™ microseal closure utilizes plastic interlocking fasteners to create a secure closure at the bottom of the pouch. The AF300™ filter allows for a slow release and deodorization of gas from the pouch.