At 2600 cubic inches, the Halftrack™ makes for a great 3-day pack with a large main compartment for all of your essentials. The Halftrack features a zippered hood pocket and a large front or top opening main compartment, optimized for carrying PRC-117 type radios. The two large exterior side pockets are great for two 3-liter hydration bladders or tripods and MOLLE webbing around the pack gives you the ability to add any pouches and accessories you might need. An included and stowable rain fly keeps the elements out and your gear dry.