How to Buy a Backpacking Backpack for Your Next Adventure

Table of Contents

1. Introduction
2. Understanding Backpack Volume
3. How to Measure Your Torso for the Perfect Fit
4. The Importance of the Hip Belt
5. Suspension and Frame Types
6. Essential Features to Look For
7. Materials and Durability
8. How to Test a Pack Before You Buy
9. Common Mistakes When Buying a Backpack
10. Organizing Your Pack for Balance
11. Maintaining Your Backpack
12. Conclusion
13. FAQ

Introduction

You are five miles into a ten-mile day, and every step feels like a chore. The straps are digging into your collarbones, the weight is pulling you backward, and your hips are bruised from a belt that will not stay put. This is the reality of hitting the trail with the wrong pack. Choosing the right backpacking backpack is the most critical gear decision you will make, as it carries every other piece of survival and camping equipment you own.

At BattlBox, we know that the best gear is only as good as your ability to carry it comfortably into the wild, and you can get expert-curated gear delivered monthly. This guide covers how to measure your body, select the right volume, and identify the features that matter for your specific hiking style. Whether you are prepping for a quick overnight or a multi-week expedition, finding the right fit is the first step toward a successful journey.

Understanding Backpack Volume

The first step in learning how to buy a backpacking backpack is determining how much space you actually need. Backpack capacity is measured in liters. The right volume depends on the length of your trip and how much "luxury" gear you prefer to carry.

Overnight Trips (30 to 50 Liters)

These smaller packs are designed for single-night outings or minimalist hikers. If you have ultralight gear that packs down small, a 45-liter pack can be plenty, and a 40-liter waterproof backpack is a solid benchmark. However, beginners often find these too cramped because entry-level sleeping bags and tents tend to be bulkier.

Weekend Trips (50 to 70 Liters)

This is the "sweet spot" for most backpackers. A 60-liter or 65-liter pack provides enough room for 2 to 4 nights in the backcountry. It accommodates a standard tent, a sleeping system, a stove, and several days of food. Most gear we include in our camping collection is designed to fit perfectly within this volume range.

Extended Trips (70 Liters and Up)

When you are heading out for five days or more, you need extra space for food and fuel. These larger packs are also necessary for winter backpacking, where bulky layers and heavy four-season tents are mandatory. They are built with beefier suspension systems to handle the extra weight, and a deeper look at loadout planning starts with How to Pack for Backpacking Travel: A Comprehensive Guide.

Quick Answer: To buy a backpacking backpack, first measure your torso length from the base of your neck to the top of your hips. Choose a volume between 50 and 70 liters for most 2–4 day trips, and ensure the hip belt carries 80% of the total weight.

How to Measure Your Torso for the Perfect Fit

Many people assume they need a "Large" pack because they are tall. This is a common mistake. Pack size is determined by your torso length, not your overall height. A tall person can have a short torso and long legs, while a shorter person might have a long torso.

Step 1: Locate the C7 Vertebra

Tilt your head forward and feel for the bony bump at the base of your neck. This is your seventh cervical vertebra, or C7. This is the top starting point for your measurement.

Step 2: Locate Your Iliac Crest

Place your hands on your hips so your index fingers point forward and your thumbs point toward your back. The shelf-like bone your hands are resting on is the iliac crest. Imagine a horizontal line connecting your two thumbs across your spine.

Step 3: Measure the Distance

Have a friend use a flexible measuring tape to track the distance from the C7 vertebra down to that imaginary line between your thumbs. This measurement in inches is your torso length.

Key Takeaway: Always size your pack based on your torso measurement rather than your height to ensure the weight transfers correctly to your hips, and our how-to pack a backpacking backpack guide is a useful next step once you have the right fit.

The Importance of the Hip Belt

The biggest secret to carrying a heavy load is making sure your shoulders aren't doing the work. A well-fitted backpacking backpack should transfer roughly 80% of the weight to your hips. Your legs are the strongest muscles in your body; use them.

Hip belt sizing is usually more flexible than torso sizing, but it still matters. The padded portion of the belt should wrap around the front of your hip bones, leaving a gap of about 3 to 6 inches between the two padded ends where the buckle cinches. If the padding doesn't reach your hip bones, the weight will sag. If the padding overlaps, you won't be able to get it tight enough.

Many modern packs offer interchangeable hip belts. If you have a long torso but a very slim waist, you might need a "Large" frame with a "Small" hip belt. When we curate gear for our subscribers, we prioritize adjustability so that the equipment can adapt to different body types, which is why our Advanced and Pro tiers are worth a look.

Suspension and Frame Types

The frame is the skeleton of your pack. It provides the structure needed to move weight from your shoulders to your hips.

Internal Frame Packs

The vast majority of modern backpacks use an internal frame. These consist of two aluminum "stays" (rods) or a plastic framesheet hidden inside the back panel. They are designed to keep the load close to your body, which helps with balance on uneven trails.

External Frame Packs

While less common today, external frame packs still have a dedicated following. The bag is attached to a visible metal frame. These are excellent for carrying extremely heavy, irregular loads (like hunting gear) and offer superior ventilation because the bag stays away from your back.

Frameless Packs

Usually reserved for the ultralight community, these packs have no rigid structure. They rely on the hiker to pack their gear strategically to create a "virtual frame." Unless your total gear weight is under 20 pounds, we do not recommend a frameless pack for beginners.

Myth: A bigger backpack is always better because you can carry more. Fact: Large packs invite overpacking. An oversized, half-empty pack also carries poorly because the weight shifts around and creates instability.

Essential Features to Look For

When you are comparing models, certain features make life on the trail much easier. Do not get distracted by "gimmicks." Focus on the functional components that help you organize and manage the load.

Load Lifters

These are the small adjustable straps located on top of the shoulder straps. They should connect to the frame at a 45-degree angle. When pulled, they prevent the top of the pack from pulling away from your body. This keeps the center of gravity over your hips, and if night hiking is part of your plan, our flashlights collection is worth a look.

Sternum Strap

This strap connects the two shoulder straps across your chest. It prevents the shoulder straps from sliding outward toward your arms and helps stabilize the pack during movement. It should be positioned about an inch below your collarbone.

Pockets and Access Points

• The Brain (Lid): The zippered compartment on top. Use this for items you need quickly, like a headlamp, snacks, or a compact first aid kit.
• Hip Belt Pockets: Essential for small items like a pocket knife, lip balm, or a compass.
• Front "Shove-it" Pocket: A large mesh pocket on the front of the pack. This is perfect for stashing a wet rain shell or a tent fly.
• Side Pockets: These should be deep enough to hold a 1-liter water bottle securely, along with a compact flashlight.

Hydration Compatibility

Most modern packs include an internal sleeve for a water bladder (a plastic reservoir with a drinking tube). Check for a "port" or a small hole where the tube can exit the pack. This allows you to stay hydrated without stopping to take off your pack, and it pairs well with the rest of our water purification collection.

Materials and Durability

Backpacking gear takes a beating. You will scrape your pack against granite, shove it through thorn bushes, and drop it on dirt. Most high-quality packs are made from Ripstop Nylon or Dyneema.

Ripstop Nylon is categorized by "Denier" (D), which measures the thickness of the fibers. A 210D nylon is standard for many lightweight packs, while 400D or higher is used on high-wear areas like the bottom of the pack. Dyneema (formerly known as Cuben Fiber) is incredibly strong and waterproof but significantly more expensive.

At BattlBox, we look for gear that strikes a balance between weight and ruggedness, and we apply that same standard across our medical-and-safety collection. A pack that saves you two pounds but rips on its first outing is a liability in the field.

How to Test a Pack Before You Buy

Never buy a pack and head straight to the trailhead. You need to test it under load. Most specialty outdoor retailers have "weighted pillows" or sandbags you can put in the pack to simulate a real load.

The Test Procedure:

1. Load the pack: Put 20 to 30 pounds of weight inside.
2. Put it on: Loosen all the straps first.
3. Cinch the hip belt: It should sit directly on top of your hip bones.
4. Tighten shoulder straps: They should wrap comfortably around your shoulders with no gaps.
5. Adjust load lifters: Pull them until the pack feels snug against your upper back.
6. Walk around: Spend at least 15 minutes walking, including up and down stairs.

If you feel any "hot spots" (pinching or rubbing) or if the weight feels like it is pulling your shoulders back, the pack is either the wrong size or not adjusted correctly.

Common Mistakes When Buying a Backpack

• Buying for the "Ultimate Trip" first: Many beginners buy a massive 85-liter pack because they dream of a month-long trip. If 90% of your hiking is weekend trips, that huge pack will be uncomfortable and heavy.
• Ignoring the empty weight: Some packs weigh 6 pounds before you even put gear in them. While heavy-duty suspension is good, don't carry more "pack" than you need.
• Overlooking gender-specific designs: Women’s-specific packs often have shorter torso ranges, narrower shoulder widths, and hip belts shaped for different pelvic angles. These can make a massive difference in comfort.
• Buying strictly on price: A cheap pack with poor suspension will cause pain. Your pack and your boots are the two items where you should never cut corners on quality.

Bottom line: The best backpacking backpack is the one that fits your torso length perfectly and transfers the weight to your hips without creating pressure points.

Organizing Your Pack for Balance

Once you buy your pack, how you fill it matters just as much as how it fits. A poorly balanced pack will pull you off-kilter and cause fatigue.

The Bottom Zone

Put your light, bulky items here. This usually means your sleeping bag and any extra clothing you won't need until camp. This creates a base for the rest of your gear.

The Middle Zone (Close to Back)

This is where your heaviest items should go. Your food bag, water reservoir, and stove should be centered against your spine. Keeping the heavy weight close to your center of gravity prevents the pack from sagging.

The Middle Zone (Away from Back)

Fill the space around your heavy items with lighter gear like your tent body or a down jacket. This keeps the heavy items from shifting.

The Top Zone

Put your "essentials" here. Your rain jacket, water filter, and lunch should be easily accessible.

Maintaining Your Backpack

A quality pack can last a decade if you take care of it. After every trip, empty it completely. Shake out the pine needles and dirt. If it gets muddy, use a wet sponge and mild soap to spot-clean it.

Important: Never put a backpacking backpack in a washing machine or dryer. The heat and agitation can damage the waterproof coatings and the internal frame. Always air-dry your pack in the shade. UV rays from direct sunlight can degrade the nylon over time.

Conclusion

Buying a backpacking backpack is an investment in your comfort and your ability to explore the wild. By focusing on your torso measurement, selecting a volume that matches your trip length, and ensuring the weight sits on your hips, you are setting yourself up for success. Remember that gear is a tool meant to be used; the more you practice with your pack, the more "dialed in" your system will become.

Our mission at BattlBox is to provide you with the expert-curated gear and knowledge you need to be prepared for any adventure. From the sharp edges in our Pro Plus tier to the shelter systems in our Advanced boxes, we ensure you have what you need to fill that pack with confidence, and the same mindset applies to our emergency preparedness collection.

Adventure. Delivered.

Next Step: Measure your torso today and choose your BattlBox subscription.

FAQ

How do I know if my backpack is too big or too small?

If your pack is too big, the shoulder straps will have a gap above your shoulders, and the weight will sag toward your lumbar. If it is too small, the hip belt will sit too high on your waist, and the shoulder straps will pinch your neck and upper back. A correctly sized pack will feel like an extension of your body, with the weight firmly supported by your hips. If you want more context on building a trail-ready kit, The Essential Hiking First Aid Kit List You Need for Every Adventure is a helpful companion read.

What is the best volume for a beginner backpacker?

A 50 to 65-liter pack is generally the best choice for a beginner. This size is versatile enough for an overnight trip but has enough room for the slightly bulkier, more affordable gear that most people start with. It allows you to grow into the hobby without needing to upgrade your pack immediately.

Do I need a rain cover for my backpack?

While some packs are made of water-resistant materials, very few are truly waterproof. A rain cover is a lightweight insurance policy that keeps your gear dry during a downpour. Many hikers also use "pack liners" (like a heavy-duty trash bag inside the pack) to ensure their sleeping bag and dry clothes stay protected even if the exterior gets soaked. If you want a deeper dive into staying safe around water, What Is Water Purification? is worth a look.

How much should my loaded backpack weigh?

A general rule of thumb is that your fully loaded pack should not exceed 20% to 25% of your total body weight. For a 180-pound person, that means a target weight of 36 to 45 pounds. If you are just starting out, aim for the lower end of that spectrum to avoid injury and keep the experience enjoyable.