Welcome to the next generation of fly boxes. Sticky silicone sheets team with a unique, tear-drop cutout slit system to create the ultimate in fly storage. The slim-line clear polycarbonate body is durable and shatter-resistant, and fits unobtrusively in a vest or pack pocket. Magnetic closure system for ease of use. The Big Bug Box is specifically designed for larger flies with hook sizes up to 2/0. 3⅞" x 7⅛" x 1". Polycarbonate/silicone. Flies not included. Imported.