The Umpqua UPG Foam Essential Fly Box is an extremely versatile, high-capacity slim box designed to accommodate a wide range of dries and nymphs. Aptly named for its indispensability, this box is a must-have for every angler. With its customizable design, anglers can build and organize it to their liking, making it suitable for various fly types. The Essential Insert, specifically designed for flies sized 8 to 22, serves as the everyday workhorse, providing compact and user-friendly storage. It features the FlyTrap section for offset storage without head/tail overlap and angled entry points for easy loading. The insert maximizes capacity and organization while offering deep gutters to protect fully hackled flies. Equipped with power grip foam, the Essential Fly Box ensures an improved hold, quick loading, and lightweight convenience, being 25% lighter than silicone counterparts. The box shell boasts a lightweight, low-profile slim design, complemented by a magnetic quick access open/closure feature for convenient fly retrieval. Crafted with a strong and impact-resistant shell, this fly box guarantees durability and reliable protection. Choose the Essential Fly Box as your trusted companion, keeping your flies organized, accessible, and well-preserved during your fishing escapades.