They usually range from 3,000 to 7,000 inches. 3,000 inches being the size for large daypacks, which are good for no more then one night. The 4-5,000 range is a good weekend pack. For a over a week you will need at least a 6,000 inch pack. So, remember when picking out your bag, size does matter.
Tents come in a variety of shapes on sizes.
Try not to be sucked into all the different colors and styles. Size should be the first thing your considering. These are a little big for hiking purposes. You should also bring along a piece of ground cloth. This is a piece of plastic that goes under your tent.