Berghaus MMPS Vulcan IV CedarBerghaus MMPS Vulcan IV Trekking Backpack: Ultimate Gear for Extreme Adventures The Berghaus MMPS Vulcan IV Trekking Backpack is designed for outdoor enthusiasts who demand superior performance and durability. Whether you're embarking on a multi day trek or a challenging expedition, this backpack provides the capacity, comfort, and functionality you need to succeed. Exceptional Capacity: With a spacious 100 liter capacity, the MMPS Vulcan IV can carry