Ultra-transparent ABS cover, clear and sturdy. The inner pad is cut with silicone pad, which can provide better grip and fast loading, ideal for bead heads and wet flies. More Specifications: This slim foam box will help you maximize the loading of standard nymphs and dry flies, extra-thin boby for easy carrying in any pocket. H048M:5.39'' (L) X 3.74'' (W) X 0.63'' (H). H048L:7.36'' (L) x4.02'' (W) x0.63'' (H). Sealed and Waterproof: The thick ABS material of the shell is equipped with embedded rubber gaskets and secure latches for excellent sealing performance, protect your hooks to stay dry in the fly bait box. This box also floats in the water and will not lose in the water during use. Long Life Use: The inner storage board of the box is made of high-quality silicone material, which is a new environmentally friendly material that is heat-resistant and waterproof, greatly extending the service life. The deep grooves on board can store fully combed flies. Aventik Fly Box: These innovative fly boxes from Aventik offer anglers diverse and versatile fly storage options, designed to meet the highest standards in the market.