At 2150 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 zip-top pocket and a large front zip compartment optimized for carrying PRC-117 type radios. Two large exterior side pockets for two 3-liter hydration bladders and MOLLE webbing around the pack gives you the ability to add any pouches and accessories you might need. A stowable rain fly keeps the elements out and your gear dry.