The one-bag community obsesses over liters and organization, but a meticulous real-world test of three Fjällräven bags proves that sometimes less structure means more space—and that compression cubes might actually be hurting your packing efficiency.
A dedicated one-bagger tested the Kånken Original (16L), Kånken Laptop 15" (18L), and Skule 20L to see what actually fits for European travel. The results challenge conventional packing wisdom.
The Compression Cube Trap
In the first attempt using Thule compression cubes, all three bags felt "very bulky and filled to the top." The Kånken Original couldn't fit a laptop or water bottle. The Kånken Laptop struggled to fit the laptop without forcing it. Even the larger Skule 20 felt uncomfortably stuffed.
But here's where it gets interesting: ditching the compression cubes completely changed the results.
In the second attempt without packing cubes, both the Kånken Laptop and Skule 20 easily fit the laptop in their compartments. "The clothes shifted around better and they were easier to carry," the tester reported. The bags still felt packed but were no longer uncomfortably bulky.
The verdict: "Ditch the compression cubes and let the main compartment do the compression job itself."
What Actually Fit
The test packed for a week-long trip: - 1 jeans, 1 shorts - 1 cashmere cardigan, 1 crochet top, 1 button-up, 1 lace top, 1 crop top, 1 striped tee - PJ set, 5 underwear, 2 bras, 4 socks - Full toiletry bag (toothbrush, toothpaste, makeup, skincare, solid shampoo, hair products) - MacBook Air 13", digital camera, phone charger, adapter, portable battery, AirPods - Sunglasses, keys, notebook, water bottle, umbrella, jacket
The deliberately bulky items (crochet, jeans, large camera) made this an aggressive test. "Anything chunkier I would probably wear while travelling," the tester noted.
The Real Differences Between Bags
Kånken Original (16L): Too small for laptop and water bottle. "Straight-up painful" shoulder straps when carrying weight. Best for day-to-day carry without heavy items.
Kånken Laptop 15" (18L): Roomiest feeling due to big main pocket, but the back panel "makes me too warm due to the lack of breathability." The love-hate relationship led to it being the one getting sold.
Skule 20L (20L): Winner. Better organization with front compartment and top pocket. Bungee strap for jacket. Padded straps more comfortable. "While it was a bit too bulky on the first attempt, getting rid of the compression cubes really helped."
The One-Bag Philosophy Reality Check
What this test reveals is that the one-bag community's obsession with organization systems may be counterproductive. Packing cubes are marketed as essential for "maximizing space," but the rigid structure can actually waste space by preventing items from conforming to bag shape.
The bags themselves provide structure. Letting clothes shift and settle naturally uses space more efficiently than forcing everything into pre-shaped cubes.
The Practical Takeaway
For travelers trying to pack light:
Question compression cubes. They're useful for organization, but may reduce actual capacity. Try packing without them.
The smallest bag isn't always best. The 20L Skule was more comfortable than the 16L Kånken Original despite being larger, because weight distribution and strap padding matter.
Test with bulky items. If your test pack includes only tech fabrics and ultralight gear, you're not simulating real travel where you might pack jeans or a sweater.
Real capacity differs from advertised liters. The 18L Kånken Laptop felt roomier than the 20L Skule due to pocket design, proving liters don't tell the whole story.
The best travel isn't about the destination—it's about what you learn along the way. And what this one-bagger learned is that packing light is less about buying the right organization systems and more about questioning whether those systems are actually helping.
