Extra Large double sided waterproof fly box with handle. This box has 424 slots available. Now of course that is for 424 smaller flies. There is space for loads of larger flies and is perfect for carrying all your streamers and other large flies. The easy carry handle makes it perfect to haul around on a boat or just toss it in your tackle bag. Perfect for your saltwater flies. The box is approximately 11" x 8" x 2.5"