ConvaTec 416420(57mm) Natura® Invisiclose® + drainable pouch with Lock-it Pocket™ is one among the Two-Piece Ostomy System (i.e. ConvaTec’s most extensive two-piece product line) of ConvaTec. The SUR-FIT Natura® and Natura® + Flange Systems (Two-Piece Stoma System) that are compatible with this Natura® + drainable pouch signals a secure, accurate closure with a series of audible “clicks”. A simple snap-off, snap-on design allows users to change the pouch quickly to match activities without removing the skin barrier (baseplate) from the skin.