Hollister Premier - 12" 1-Piece Drainable Ostomy Bag Lock n Roll (Convex Flextend/Cut to Fit) features Hollister's most discharge-resistant skin barrier. This cut to fit Flextend barrier is designed for extended wear. Its integrated convex shape is ideal for those with recessed, retracted, or flush stomas. The drainable pouch features the patented Lock n Roll system for a secure seal. To activate the Lock n Roll feature, simply roll the pouch three times and press from the middle out. The pouch's odor-barrier, rustle-free film, and ComfortWear panels add security and comfort.