Customizable Double-Sided Storage for Large Fly CollectionsThis fly box combines clear double-sided lids with interchangeable silicone insert choices. The gasket seal protects the contents from water, while the broad insert selection lets anglers choose a layout for different hook sizes and fly patterns.Key Features Up to 220-Fly Capacity — Provides high-capacity storage across both sides. Silicone Insert Options — Multiple insert codes allow the internal layout to be selected. Clear Double-Sided Lids — Make patterns visible before the box is opened. Waterproof Gasket Seal — Helps protect stored flies from moisture. Floating Construction — The closed box floats if dropped in water. Specifications Product Type: Double-sided fly box Insert Material: Silicone Capacity: Up to 220 flies Body Options: A, B, C, and D Insert Options: HB16S, HB18S, HB28S, HB32S, HB95S, and HB99S depending on side and variant Closure: Gasket-sealed Check the full variant name to confirm the body and insert combination supplied.