How to Decide on the Correct Backpack Size

Every year, millions of people head out on a camping or hiking trip and bring along a backpack to carry their items. Whether it’s for the weekend or the entire season, there are many essential things to consider before choosing your ideal pack.

Choosing the haversack size that is right for your travel can be a difficult decision. You need to consider your activity level, travel plans and backpack weight capacity before deciding which backpack size will work best for you.

This blog post will help you decide how big a backpack is needed based on your height, weight, clothing size, and the number of days or nights you plan to backpack.

Backpack Size

The first thing to consider when choosing a backpack is your size and weight preferences. For instance, if you’re tall and like to bring more items than the shortest hikers, opt for a larger pack. A backpack size calculator could come in handy in this.

If you aim to cut weight from your load on the trail, look for a lightweight model with little extra features.


Decide how you plan to use your backpack before making a purchase. For example, packs designed explicitly for multi-day treks have special pockets and compartments that hikers do not need.

Also, know the difference between internal and external frame models. What may seem like the best pack size for winter backpacking may not be suitable for day hikes.

If you’re looking for your kid’s schooling backpack, you may need to check our backpack size guide for school.


When trying on a backpack, look for one that is comfortable. To achieve the best fit possible, load up your pack with your gear before heading out into the store for a test run.

Once your pack is loaded, check to see that it sits evenly on your back and that the waist belt provides support from below. That’s the only way you can get an ultralight backpack size for your trip to the mountains.


Lower-quality packs sometimes skimp on an adjustable frame, plastic hip belts, and padded shoulder straps. As you research different models, make sure that you read carefully about the fit and type of suspension system offered.

Some packs will adjust to fit your torso length better, and others offer special pockets for first aid kits, water bottles, and hiking boots.


When choosing a backpack, look for an outdoor-grade material such as nylon or polyester. Many other materials, including canvas and leather, are not as durable.

If you plan on using your pack in extreme conditions such as the Himalayas or the Olympic National Forest, make sure that it can withstand the weather.

A good tip for doing this is to look at how the backpack’s back panel is constructed.


The weight of your backpack is essential. Not only will less weight make you more comfortable on the trail, but it’ll also increase your endurance. Try to select a pack that weighs under 10 lbs when full or around 30 percent of your body weight.


Your budget will determine what type of backpack you can afford to buy. Most hiking packs fall under around $100, but you’ll have to spend more for a model with all the bells and whistles.

External Frame

These types of backpacks carry heavy loads on the outside of your body rather than against it. The downside is that they are large and are more difficult to pack.

External frame packs usually feature removable aluminum or plastic stays that can be adjusted to size. This provides some flexibility over the pack’s fit. The most common design is one in which you load your gear into a basket or onto horizontal bars.

However, many models now offer separate compartments (for more organization) and sleeping bag compartments.

External frame packs are sometimes designed for specific activities, such as mountaineering or skiing. Yet, they are great general purpose backpacks that come with a wide range of features and can be used for day hikes, multi-day treks, and even overnight occasions.

Internal Frame

These rucksacks feature a flexible plastic or metal frame that wraps around your body to support the pack. The advantage of internal structures is that they are lighter and more comfortable.

Internal frame packs have improved a lot over the years, providing large storage compartments, plenty of pockets, and adjustable harnesses.

They’re great for hikers looking for a pack with many conveniences. Besides, they’re also durable enough to carry heavier loads.

Internal frame designs are often aimed at specific activities such as treks, overnight camping trips, backpacking tours.

Although they can be used in light-duty, interior frame designs are more specialized, meaning that they aren’t as versatile.

Backpacks with internal frames are usually categorized by their liters (volume). A 50 liter bag fits around 12 sets of clothes, making it perfect for weekend trips. Check out the backpack size chart liters to get the rucksack’s frame that’ll support your luggage.

Shoulder Straps

The shoulder straps are padded leashes that go over your shoulders to support the pack’s weight. They often have clips or loops for holding items, such as a water bottle or walking sticks.

Some models come with stowable hip belts and removable shoulder straps, allowing the pack to convert into a fanny pack.


Most rucksacks have several pockets for storing miscellaneous items. These include hip belt pockets, side mesh pockets, and small compartments.

Other packs also feature an exterior pocket or compartment on the bottom. This is convenient for keeping wet or dirty clothes separate from the rest of your gear.


Common closures include drawstrings, clips, and zippers. Drawstring closures are found on external frame packs. Zippers can be found on both types of bags.

They provide excellent protection from the elements when they’re fully opened. Yet, you have to zip and unzip each time you access your gear. Clips are quick and easy to open, but they aren’t as secure as drawstrings or zippers.

Why Choosing Your Backpack Is Easy?

No matter what type of bag you choose, make sure your shoulders are comfortable – especially when carrying a full load! You may also want to look at a bag with a hip belt, which helps distribute the weight more evenly.

Here at Backie Packie, we provide you with a wide catalog of the best backpacks.

Whether you need small sizes, or backpacks for all occasions, we have the right backpack size for you. Order one of our rucksacks to get the best deals today.

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