Strider - It's the frame and the bag. Be sure to look at the photos on the ebay auction. Just look for Trapper Nelson Indian Pack Board. Max-4 - In choosing a pack, start by gathering and laying out all the stuff you need for a 2-3 night trip, then snug them all in a box. Measure the length, width and height and multiply to give you the necessary cubic inches. From that, you'll be able to pick and choose the bag you need. Just remember: the bigger the bag, the more stuff you will carry, the more the pack will weigh and less likely you will be to pick it up to go for a hike. For 2-3 nights during the 3 seasons: 20# should be your goal. For the cold of winter: 30#. Add the weight of clothing you wear, of course. Enjoy.