Complete Guide to Choosing a 70L Hiking Backpack
A practical step-by-step guide to choosing the right 70L pack for hiking, camping, trekking and extended outdoor adventures—without wasting money on features you don’t need.
Is a 70L Backpack Right for You?
Do I Need 70L? — Quick Quiz
Result: Select all options above.
What Does 70L Actually Mean?
70L = approximately 70 liters of internal storage volume. 70L doesn’t mean 70 kg.
Actual usable capacity varies by backpack design, pockets and how the manufacturer measures capacity.
When Is 70L the Right Capacity?
70L vs 60L
Don’t upgrade to 70L simply because 70L sounds better. Upgrade because your actual gear needs the additional volume.
70L vs 80L
Don’t choose 80L simply because “more space means better.” The larger pack can add unnecessary bulk and encourage overpacking.
Determine Your Actual Gear Volume
- Put everything you actually intend to carry on the floor
- Group it: Shelter, Sleep, Clothing, Food, Cooking, Water, Essentials
- Try packing it into your current backpack
- Identify the real problem: Volume? Weight? Organization?
Don’t Confuse Capacity With Weight
Choose the Right Frame
🏗️ Internal Frame
Best for most modern backpacking setups. Stable, close to body, better for uneven terrain, good load transfer
🧭 External Frame
Useful for certain heavy or irregular loads but less common in modern backpacking
⚡ Frameless
Designed more toward lightweight setups and generally offers less support under heavier loads
REI describes internal-frame packs as the dominant modern design and notes that frameless packs provide less support under heavier loads.
How Much Weight Should the Backpack Carry?
Capacity and load-carrying ability are separate specifications. Check the manufacturer’s intended load range. Frame strength, hip belt, suspension, padding, load lifters, and pack construction all matter.
Backpack Fit Is More Important Than Extra Features
A perfectly featured backpack that doesn’t fit you properly is still the wrong backpack. REI emphasizes that torso length—not overall height—is the key measurement when sizing a backpack.
How to Measure Your Torso
Check the Hip Belt
REI notes that a large majority of pack weight should be supported around the hips when properly fitted.
Shoulder Straps
Load Lifters
They help pull the upper portion of the backpack closer to the body. REI describes load lifters as an important adjustment component and cautions against overtightening them.
Sternum Strap
Helps stabilize the shoulder straps. It should not be tightened aggressively.
Frame and Suspension Comparison
Material — What Should You Look For?
🧵 Nylon
Durability, flexibility, outdoor use
🛡️ Ripstop
Helps limit tear propagation
🔨 Heavier Reinforced
Useful where abrasion resistance is a priority
⚡ Lightweight Technical
Reduces weight but may require more careful handling
Choose the material based on how aggressively you use the backpack—not just the material name.
Water Resistance vs Waterproofing
Backpack Access
REI notes that top-loading is common and that additional access features can add weight and cost.
Pockets and Organization
Hydration Compatibility
Sleeping Bag Compartment
A dedicated compartment can make it easier to separate sleeping gear from food and clothing, but it’s not mandatory if the backpack’s main compartment works well for your packing system.
Ventilation
REI explains that tension-mesh suspension systems can improve airflow by holding the packbag away from the back.
Adjustable Torso — Is It Worth It?
What Features Actually Matter?
Select your priority:
Features You Shouldn’t Overpay For
Will this feature solve a problem I actually have?
70L Backpack for Camping
70L Backpack for Extended Trips
Longer duration, more supplies, additional clothing, limited resupply. Longer trip doesn’t automatically mean heavier or larger pack if gear is compact and resupply is available.
70L Backpack for Cold Weather
☀️ Summer
🌦️ Spring/Fall
❄️ Winter
REI notes that larger packs can accommodate bulkier winter clothing, warmer sleeping bags and four-season tents.
Packing Efficiency Before Buying a Larger Backpack
The 70L Backpack Buying Checklist
10-Minute Backpack Test
- Minute 1–2: Check torso size
- Minute 3: Adjust hip belt
- Minute 4: Adjust shoulder straps
- Minute 5: Check load lifters
- Minute 6: Walk around
- Minute 7: Bend and move
- Minute 8: Check pockets and access
- Minute 9: Check weight distribution
- Minute 10: Ask: Would I actually want to wear this for several hours?
Common Buying Mistakes
70L Backpack Decision Matrix
Build Your Backpack — 3D Interactive
Click items to add them to your 70L pack:
Illustrative — actual gear volumes vary.
Interactive FAQs
Is a 70L backpack good for hiking?
Yes, particularly for multiday and extended hiking where gear volume justifies the capacity.
How many days is a 70L backpack good for?
It can suit trips ranging from multiday to extended adventures, but the exact number depends heavily on gear volume and resupply.
Is 70L too big for backpacking?
Not necessarily. It may be appropriate when you need the additional volume, but a smaller pack is preferable if your gear fits comfortably.
Is a 70L backpack good for camping?
Yes, especially when carrying shelter, sleeping equipment, food and cooking gear.
How should a 70L backpack fit?
Torso length should be measured first, followed by hip-belt and harness adjustments.
Is a heavier 70L backpack better?
Not automatically. Weight, suspension, durability and load requirements should be considered together.
What frame should a 70L backpack have?
For most substantial hiking loads, an internal frame is a practical starting point.
Do I need a rain cover?
It can be useful, but waterproof liners or dry bags can also be part of a weather-protection strategy.
Should I choose 70L or 80L?
Choose 70L if your actual gear fits comfortably. Consider 80L if your gear repeatedly exceeds the available volume.
What is the most important thing when buying a 70L backpack?
Fit and actual gear requirements.
Where the AdventureSupplier 70L Backpack Fits
If your gear matches the 70L profile, the AdventureSupplier 70L Adventure Backpack is worth comparing. For deeper guidance, see The Complete Guide to 70L Hiking Backpacks and Complete guide to choosing a 70L hiking backpack.
For more expert advice, REI’s backpack guide and REI fit adjustment are excellent. The Washington Trails Association backpack guide offers practical selection advice. The National Park Service hiking safety page and US Forest Service offer valuable preparation tips. The American Hiking Society and Leave No Trace provide additional trail insights. Always check weather conditions and NOAA for environmental updates before heading out.
Ready to Choose Your 70L Backpack?
The best 70L hiking backpack isn’t necessarily the one with the most features or the highest price. It’s the one whose capacity matches your actual gear, whose suspension can handle your intended load, and whose torso and hip-belt fit let you carry that load comfortably.
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