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. Magnetic closure system for ease of use. The Big Bug Box holds flies with hook sizes up to 2/0 and measures 3⅞"W x 7⅛"L X 1"D. Polycarbonate/silicone. Imported.