A Comprehensive Guide to Outdoor Backpack Uses
Later they changed their approach: Why let the manufacturer’s marketing strategy dictate your choice? Why not pick the right backpack based on your own needs?
So the editor at Trail Explorer thought about their own experiences using backpacks over the years and categorized outdoor backpacks by use. They found that packs can actually be matched to different uses based on capacity. Once you determine your purpose, choose the appropriate capacity, then refer to online reviews, forum discussions, and expert magazine recommendations for that capacity range—and suddenly picking the right pack for you becomes much easier.
Below is the editor’s categorization, based on personal experience. It may not be perfect, so feel free to share your thoughts:
1. 3-Hour Endurance Sports Hydration Pack (<10L):
This type of pack is mainly used for endurance training or sports such as marathons, cycling, or hiking, to carry water and essential nutrients, plus some must-haves like sunglasses, sweat towels, keys, phones, etc. The main feature is a 3L hydration bladder, along with some small storage compartments. There may also be an expandable mesh pocket for carrying a lightweight windbreaker when needed.
Classic examples include the Camelbak Octane XCT/LR, OSPREY VIPER 10, and RAPTOR 10.
2. One-Day Lightweight Outdoor Pack (~20L):
This type of pack is suitable for one-day outdoor activities like hiking, trekking, kayaking, ice climbing, etc. In addition to the essentials mentioned above, it can also carry a windbreaker, fleece, more food, and extra gear such as cooking utensils, trekking poles, ice axe loops, etc.
Classic examples include the Camelbak MULE, RIMRUNNER 20, Osprey Talon 22, and Arc'teryx Axios 25.
Within this category, there is a type called a summit pack, designed for mountaineering and used during the final push to the summit. It carries only the bare minimum, featuring an ultra-lightweight design. When not in use, it can be folded into a compact, palm-sized bundle that’s extremely light, but unfolds into a ~20L pack when needed. It’s also convenient for everyday travel—if you buy souvenirs on a trip, you can simply pull this pack out and use it as a backpack.
3. Everyday Multi-Purpose Pack (~30L):
This type of pack works for 1–3 days of light outdoor use, but can also serve in daily work or casual settings. Some models have strong expansion capabilities, making them suitable for roughly a week of business trips.
For urban work needs, some feature laptop sleeve designs that fit a portable or tablet device.
Classic examples include the Osprey MANTA 30, Camelbak Alpine Explorer 30, and Maxpedition laptop bags.
4. Travel Pack (~40L):
This type of pack is ideal for 1–2 weeks of relatively relaxed travel, accommodating plenty of clothes and other items.
5. Heavy-Duty Pack (>50L):
Designed for long-term outdoor activities, these packs are made from durable materials with robust support systems, enabling you to carry a large amount of gear, food, and water while still feeling comfortable. They can handle all kinds of tough outdoor environments, are extremely sturdy and wear-resistant, and hard to damage.
Classic examples include the Osprey Aether, Argon, Gregory B65, and Arc'teryx BORA.
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