Solid aluminum with flip-top lid. 6 (1.0" X 1.0") clear-view compartments as shown. Spring loaded individual compartment lids makes for easy & secure storage of your beads, flies, or other small tackle items. Foam-lined lid for pinning flies and hooks. This is a solid little box, offers excellent low profile storage in your vest or jacket. Unit measures 3.5" L X 2.5" W X 1.0" H Easy to open compartments with clear view of items.