The F100 Big Top is a new and exciting piece that Eberlestock introduced this year. It has all the bells and whistles that you normally would see out of an Eberlestock but what they did different this year was designed a pack for those who are looking at carrying the size without the known weight of a standard Eberlestock. The result was the Big Top Series. This pack has a rocking 6,100 cubic inches of storage and even features a large frontal closure that makes all of your gear easily accessible and even utilizes a dry bag type roll top closure. This pack is a machine and is ready to take the hills, who's ready for the Ultimate Pack?Features:Roll top closureCan be combo'd with Mainframe for ultimate carry capacityHuge frontal opening for easy gear accessLightweight but extremely tough