The EMOD Lid is designed to attach to both the Vapor (both old and new versions with 2500 and 5000c.i.) and Mainframe system using quick-detach gatekeeper buckles at four points. It serves as an additional storage option for smaller items, allowing you to expand the capacity of the Vapor pack. Moreover, the EMOD Lid can be used to compress items between itself and the top of the Vapor pack. It includes a durable stretch fabric top pocket and a spacious main compartment suitable for storing accessories and small gear items.