External frame packs are the go-to of backpackers.
An external frame backpack is worth your consideration since it lets you carry more things, offers better ventilation, and allows for better load distribution.
This article will talk about the basics of choosing, wearing, and packing an external frame backpack.
Capacity
Capacity is calculated similarly between external and internal frame packs — however, for external packs, the calculated capacity includes only the main compartments and not the outer pockets.
External frame backpacks are known for having a lot of pockets and attachment points.
You can put small items on your shoulder straps, lash things to the back, or clip them to the frame.
Comfort
Some people tend to prefer internal frames since they find external frames to be overall less comfortable — which is because of their heavy total weight.
However, external frames still have the following comfort features to help you manage the weight distribution on your hips.
- Compression straps
- Telescopic frame
- Padded straps
- Lumbar support
Materials like titanium and carbon also help make external frames lighter but still durable.
Weight
External frame backpacks are usually heavier than internal frame packs, with most options being around 3 to 6 pounds.
They are usually made of aluminum. However, the lightest external frame backpacks use titanium and carbon. Despite being lighter than aluminum, they are still durable enough to carry heavy loads.
Some manufacturers even use plastic to allow for more flexibility.
Backpack Fabric
There are three different backpack fabrics, each with its own pros and cons.
- Nylon – The least expensive among the three, but also less waterproof and durable. This fabric absorbs water and usually needs to be treated with durable water repellent (DWR) to repel water.
- Polyester – This is also inexpensive but is more durable and waterproof than nylon. It does not absorb water and dries fast, so it does not need DWR.
- Dyneema – This is very durable, lightweight, and waterproof, but it is very expensive.
Durability
External frame packs are known to be very durable.
In fact, a robust frame and thick fabric can make one last you a lifetime. After all, they are designed to carry a lot of weight and take lots of abuse during your hikes.
How Should an External Frame Backpack Fit?
When choosing an external frame backpack, you should check how it fits your body. Below are some tips to help you tell whether or not the pack fits you well.
- Most of the weight should rest on your hips rather than your shoulders.
- Shoulder straps should not be narrow enough to cut into your skin but also should not be wide enough to slip off your shoulders.
- Sternum straps should be a few inches below your collarbones — any higher and they might choke you, and any lower and they will not be very useful.
- The hip belt should be on the upper curve of your hip and just below your waistline. You should also tighten it to be snug.
- Shoulder straps should have lift straps on the top so you can adjust the padded straps so they sit lightly on your shoulders.
NOTE: It is especially important for women that the majority of the weight is off their shoulders. That is because their strength is in their lower, rather than upper, body.
What is the Right Way to Pack an External Frame Backpack?
External frame backpacks allow for better weight distribution. But how exactly should you pack an external frame backpack?
The first step is to pack the heaviest items near the top and close to your back. This helps ensure an evenly distributed load on your hips so you can keep a straight back to support that load.
This is unlike internal frame backpacks that might force you to lean forward slightly if you want your hips to catch some of the weight.
Below are other tips on how to properly pack your external frame backpack.
- Lightweight items that you will not need throughout the day (like sleeping bags) can be placed at the very bottom.
- Place medium-weight items in the middle, furthest away from your back.
- Water, pans, the stove, and other heavy items should be at the top, next to your back. Putting them anywhere else may result in the load pulling on your shoulders rather than your hips.
- Go-to items like drinks, snacks, maps, and waterproofs can go in the side pockets.
- Items that are long, bulky, or awkwardly shaped can be securely strapped to the frame itself. Ensure that they are evenly balanced.
- Emergency items should be in an accessible place and close to hand.
- Pack in layers. Ensure that the heavier, harder items are properly secured by the softer items so they do not shift in your pack. That is because any movement in your backpack might cause discomfort or set you off balance.
TIP: Regardless of what you carry and how you carry them, remember that you ideally should not carry more than one-third of your body weight.
Frequently Asked Questions
External frame backpacks basically let you carry heavy and bulky items easily while ensuring you have good load distribution.
Below are a few more questions to help you better understand them.
Why Should I Choose an External Frame Backpack?
External frame backpacks hold the weight higher and further from your torso, increasing ventilation and reducing the sweat factor.
Because of how these packs are positioned, they are also better for carrying heavy loads and allow for better weight distribution. Thanks to that, you can walk with a straighter back.
An external frame back also lets you bring bulky items since you can strap them directly to the frame.
Are External Frames Sold Separately?
Some external frame backpacks are sold as frames only. This could be a good option if you already have your own pack that you want to use. You can simply secure it to the frame using straps or buckles.
However, most external frames already come with an attached backpack that cannot be removed.
Conclusion
An external frame backpack is a great option for those who want to carry bulky items on their hikes.
When looking for the right one for you, consider factors like the capacity, weight, fabric, and durability of the bag. You should also check how it fits on your body and adjust it accordingly.
Finally, when packing your external frame backpack, place the heaviest items at the top near your back. Secure them with softer and lighter items so they do not shift when you finally start walking.