7 lbs bag is a much bigger bag. Comes with a double braided rope for easier hanging abilities yet still easy to pack in the woods. The bigger the bag the more results you will see and the longer it will last. The BRB 7 bag is rated up to a year. It's size makes it drip longer. All the techniques can be used with this size bag. Low hang techniques will decrease the amount of time the bags will last. This size bag is available in all the other blends.