Choosing the right backpack size can be confusing. What does 25 liters actually mean? Is it enough for a trip? Too much for everyday use?
Here’s a simple guide.
How backpack sizes work
Backpack size is usually measured in liters. This tells you how much the bag can hold. But how that feels depends on what you carry and where you’re going.
Common backpack sizes and their uses
10–20 Liters: Small and simple

Good for:
- Daily essentials
- Light commutes
- Walks around town
- Minimal school or work items
You can fit things like a wallet, phone, water bottle, notebook, and maybe a light jacket. Best for a minimal setup.
21–30 Liters: Everyday use

Good for:
- Carrying a laptop
- Short hikes
- Gym gear
- As a travel personal item
This is a popular daypack size. It usually includes a laptop sleeve and a few extra pockets. A 25L bag can hold your laptop, charger, book, lunch, water bottle, and a spare top.
31–40 Liters: Short trips

Good for:
- Weekend travel
- Hiking gear
- Camera or sketching equipment
If you’re going away for a couple of days, this size gives you extra room without being too bulky.
41+ Liters: Travel and adventure

Good for:
- Backpacking trips
- Camping
- Long travel
- One-bag lifestyles
These are larger bags. They may need to be checked in if you’re flying. But they’re ideal for longer adventures or if you carry a lot.
How to choose the right size
Think about what you need it for:
- What do you carry every day?
- Is it for work, travel, or outdoors?
- Do you pack light or bring extras?
- Would flexible space help (like roll-tops)?
Also, check the fit. A large bag might hold your stuff, but feel awkward if you’re smaller in size.
Quick tips
- Use a small bag for daily routines
- Medium bags are good all-rounders
- Larger bags are best for travel or extra gear
- Padded straps and back support improve comfort
- Roll-top or expandable bags give more flexibility
Summary
There’s no perfect backpack size for everyone. It depends on your routine, your trip, and how much you like to carry.
If you want a durable, flexible, and weatherproof option, check out our Maverick range. They work great in both cities and the outdoors.
Now when you ask, “What size backpack do I need?”, hopefully you’ll know the answer.