Whether you’re a dry fly purist or just looking for a box to store your topwater flies, the Slim Tin offers ample storage and headspace for lots of big, bushy dries.A limited quantity of these tins are available, pre-packed with an assortment of a dozen dry flies or as an empty box ready for you to fill up. Foam Lid & Foam Tray: A foam insert on the bottom that's designed for bigger hooks with a lower profile foam insert in the lid.