Simply put, the Hooded Pack Fly is pure genius! Not only does it keep your pack completely dry and protected from mother nature but it even has a built in hood , hence the name, that keeps your head dry too! We've all been in that scenario, you just finished heard the rumbling of thunder so you hurry and scramble in your pack and pull out your fly to protect your pack and in the heat of the storm you get pounded and pounded with rain. Water starts going down your back, your face is drenching, and this hike out just turned from a beautiful stroll in the park to a wet, miserable mess. The great thing about the Hooded Pack Fly is that with the built in hood, and the material being connected, it forms a shield around the pack and your head keeping you dry and your gear protected no matter what weather. This works awesome and is a must have for anyone who owns a Mystery Ranch Pack!