Waterproof boxes keep water out, so flies stay dry and hooks don't rust. They matter most when you wade deep, fish from a boat, or carry your flies in a pack that gets wet. Choose from foam, silicone and double-sided styles in sizes from small to extra large.

Prefer a silicone insert? See the Silicone Fly Boxes. To browse every box and patch, head to Fly Boxes & Patches.