Rugged, high-quality construction with FULL LENGTH SLIT FOAM that firmly hold flies in place. Simply back flies into their station with no damage to the foam so it never wears out. 2-sided foam insert panels. Boxes open from both sides, and the see-through lids let you survey your fly inventory at a glance. Solidly built with metal hinge pin, boxes pop open and close with authority, everything first class. 11 1/2″ x 8 3/4″ x 2″.