Abstract: A squeeze-openable device applied near the opening of a sleeve-like bag snaps back upon its release to close the bag and prevent the bag's contents from spilling. The device has opposing strips connected to one another at each end. Each strip has a structure that assists the strips in snapping back to its original position to close the bag. The device can be placed on the outside of the bag or within the bag's throat. The device can have a latch to secure one strip to the other.

Abstract: A latching system including both apparatus and methods addresses the need for a reusable latch that is identical on either side of a container opening, thereby facilitating container manufacture. Also disclosed are apparatus and methods for assuring the quality of latchable container enclosed contents and enhancing the safety of container users by providing an unopened condition assurance element such as a tab that is removable from a reusable container latch. A novel latching system with a split insertion clement on a first latch side and unitary receptor element on a second latch side is also disclosed. A preferred embodiment involves an elastically obstructed latch as used on a squeeze-openable container.