Patent attributes
A containment device that opens to form a mat or work surface that has a raised lip or edge structure that contains items on the mat or work surface. The containment device closes or converts from the mat configuration to create a bag or flexible container for holding the items inside, where the lip is gathered or compacted to form an annular passage. In some embodiments, the containment device may include a cinch cord that runs inside the lip, which can be used to gather or compress the lip and change from the open mat configuration into an essentially or mostly closed bag configuration. In such embodiments, the cinch cord may include a cord lock that may be adjustably deployed to clamp the cinch cord and the lip in a position that maintains the device in the bag configuration.