Our waterproof combination fly box has plenty of room to hold all your favorite flies. The double sided box has a side for larger streamers and the back rail is good for smaller patterns such as dry flies and nymphs. It's convenient design makes it a great edition to your tackle vest or pack. You can store a whole trips worth of flies in this compact box. It is approximately 7.5" x 4.5" x 1.5" in size.