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Writer's pictureNatalie Tarin

A Deep Dive into Hiking Backpack Sizes

Choosing the right hiking backpack is like selecting the perfect hiking partner - it needs to be reliable, supportive, and carry its weight (literally!). But with a dizzying array of sizes and styles, finding your ideal match can feel overwhelming. This guide breaks down hiking backpack sizes by liter capacity, connects them to specific hiking adventures, and offers some top-notch Amazon finds to get you started.


Day Tripper (10-30 Liters): Light & Fast


These packs are your go-to for short bursts of trail magic, whether it's a quick summit push or an afternoon exploring a scenic loop. Think of them as your minimalist companions, carrying just enough to keep you comfortable and safe without weighing you down.


Osprey Daylite Plus Daypack

  • What they fit:

    • Hydration: Water bottle or hydration reservoir (up to 2 liters)

    • Essentials:  Snacks, sunscreen, first-aid kit, headlamp, light jacket or rain shell.

    • Electronics: Phone, camera, GPS device.

    • Optional:  A thin fleece or extra layer, a small book or journal.

  • Why they're good:

    • Freedom of Movement:  Smaller packs allow for greater agility and range of motion, ideal for scrambling over rocks or navigating tricky terrain.

    • Reduced Strain: Minimize stress on your back and shoulders, especially important on shorter hikes where you're not carrying heavy loads.

    • Ventilation:  Many daypacks prioritize ventilation with breathable back panels and shoulder straps, keeping you cool and comfortable.

  • Amazon finds:

    • Osprey Daylite Plus Daypack:  A classic choice with comfortable straps, plenty of pockets, and a hydration sleeve.

    • Gregory MIKO 15: Known for its exceptional ventilation and comfortable harness, perfect for warm weather hikes.

      Gregory MIKO 15

Weekend Wanderer (30-50 Liters): Geared for Adventure

Stepping up in size, these packs are your trusty companions for overnight escapes and weekend explorations. They offer the sweet spot between carrying capacity and manageable weight, allowing you to bring along the comforts of camp without feeling overburdened.


  • What they fit:

    • Sleep System:  Lightweight sleeping bag, sleeping pad, and a compact tent or bivy sack.

    • Cooking Gear:  A simple stove, fuel, pot, and utensils.

    • Extra Layers:  A warm fleece or down jacket, extra socks, and a beanie.

    • Food:  Enough meals and snacks for your trip duration.

    • Plus all your day hike essentials!

  • Why they're good:

    • Versatility:  Handle a variety of overnight trips, from established campgrounds to more rugged backcountry excursions.

    • Comfort:  Designed with features like padded hip belts and adjustable torso lengths to distribute weight effectively and enhance comfort.

    • Organization:  Multiple compartments and pockets help you keep your gear organized and easily accessible.

  • Amazon finds:



Multi-Day Trekker (50-80 Liters): Embracing the Long Haul

For those who crave extended journeys and deeper immersion in the wilderness, these packs are your ultimate expedition partners. They provide the capacity to carry everything you need for multi-day treks, allowing you to venture further and explore more.



  • What they fit:

    • Expanded Sleep System: A warmer sleeping bag, a more comfortable sleeping pad, and a freestanding tent.

    • Comprehensive Cooking Setup:  A more versatile stove, extra fuel, a larger pot, and a wider range of utensils.

    • Increased Food Capacity:  More meals, snacks, and emergency rations.

    • Comfort Items:  A camp chair, a book, a solar charger.

    • Plus all your weekend trip essentials!

  • Why they're good:

    • Capacity:  Handle larger loads and accommodate bulkier gear, ideal for longer trips and colder conditions.

    • Durability:  Constructed with robust materials and reinforced seams to withstand the rigors of extended use.

    • Advanced Features:  Often include features like trekking pole attachments, ice axe loops, and hydration reservoir compatibility.

  • Amazon finds:



Expedition Packhorse (70+ Liters): Conquering the Extreme

These behemoths are reserved for serious adventurers tackling extended backpacking trips, thru-hikes, or mountaineering expeditions. They're designed to carry significant weight and specialized gear, allowing you to push your limits and explore the most remote corners of the world.



  • What they fit:

    • Specialized Gear:  Climbing equipment, mountaineering boots, skis, snowshoes.

    • Bulky Winter Gear:  Extra-warm sleeping bag, insulated clothing layers, and expedition-grade tent.

    • Increased Food and Fuel:  Supplies for extended periods of self-sufficiency.

    • Plus all your multi-day trekking essentials!

  • Why they're good:

    • Exceptional Capacity:  Handle the heaviest loads and accommodate the bulkiest gear.

    • Rugged Construction:  Built with ultra-durable materials and reinforced stitching to withstand extreme conditions.

    • Advanced Suspension Systems:  Designed to distribute weight effectively and maintain stability even on challenging terrain.

  • Amazon finds:



Beyond Liters: Fine-Tuning Your Choice

While liters offer a helpful starting point, consider these additional factors to ensure a perfect fit:

  • Torso Length:  Measure your torso length (not your height) to find a pack that fits your frame properly.

  • Hip Belt Fit:  The hip belt should sit comfortably on your hip bones, transferring the majority of the weight to your legs.

  • Features:  Prioritize features that align with your needs, such as ventilation, hydration compatibility, trekking pole attachments, and organizational pockets.

  • Weight:  Choose a pack that's lightweight yet durable enough to handle your intended use.

  • Try Before You Buy:  Whenever possible, try on packs with weight to get a feel for their comfort and fit.


By considering these factors and using this guide as your compass, you'll be well on your way to finding the perfect hiking backpack to accompany you on all your adventures. Now go forth and explore!

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