Having a backpack fit correctly is one of the most important facets of the backpacking experience. You can ruin a good trip in a hurry by not having equipment that fits properly.
First, decide on the quantity and type of equipment you will need to bring. This will assist you in deciding which backpack you need. Deciding on the amount of space needed is also critical, so pretend you are taking a long trip and prepare for space that is conducive to that. Comfort is the most important thing to consider when choosing a backpack. You need to be able to carry the most weight with the least amount of effort.
The backpack that you purchase should be able to distribute the weight efficiently which will allow you to carry the backpack with maximum comfort. Always test the backpack before embarking on a trip to see how well it handles the intended weight. Keep adding weight a little at a time. You are the only one who will know how much weight is comfortable for you.
The straps are another important item. The shoulder straps should carry about 30% of the weight and the hip straps 70%. Make sure the straps are both comfortable and unrestrictive. With the weight in the backpack try moving around to check the mobility the backpack gives you.
The type of backpack you choose will depend on the type of hiking you plan on doing. There are two choices, internal and external frames. Internal frames are great for hard trails; they are slimmer and hug the body closely. External frames are perfect for easy trails, beginners, and children. Most backpacks are designed so that you can include extra components such as rings and snap-on.
Just remember, at the end of the day, your choice of backpack can make or break your camping experience. Choose it carefully.