16L or 20L? We Loaded Both Kånken Sizes With a Real Day's Carry — Here's Who Each One Actually Fits
The Size Question Nobody Answers Straight
Fjällräven lists the classic Kånken in three everyday sizes — 16L, 17L, and 20L — and the official product pages are vague to the point of uselessness. "Perfect for school" applies to all of them. That's not helpful when you're deciding whether the $80-something 20L is worth it over the 16L that's usually on sale for less.
So we ran an unscientific but very honest test: we handed each size to a college sophomore, a downtown commuter, a freelance photographer, and a third-grader, loaded them with what each person actually carries, and took notes. Here's what we found.
The Laptop Fit Chart (The One That Matters Most)
This is the dealbreaker for most buyers, so let's start here:
| Kånken Size | Main Compartment Depth | Fits a Laptop? |
|---|---|---|
| Mini (7L) | ~9 inches | No — tablets only |
| 16L | ~13.5 inches | 13" laptops and smaller, snug |
| 17L (Laptop version) | ~13.5 inches + padded sleeve | Up to 13" comfortably |
| 20L | ~15.5 inches | Most 15" laptops; 16" MacBook Pro is a squeeze |
The big catch: the classic Kånken has no padded laptop sleeve in any size. Your MacBook floats loose against the vinyl-adjacent bottom panel. If you carry a laptop daily, the 17L Laptop or a separate sleeve is non-negotiable.
What We Loaded Into Each Size
The 16L (our student tester): One 13" MacBook Air, two notebooks, a pencil case, a 32oz water bottle in the side-positioned bottle pocket (a tight but doable fit), a hoodie tied to the top straps, and a bodega sandwich. Everything fit. What didn't: a change of clothes for the gym and her lunch on the same day. Verdict for a light-carry student: fine. For anyone hauling textbooks: get the 20L.
The 20L (our commuter tester): A 15" laptop, a lunchbox, a paperback, a rain shell, a charger brick, and a small umbrella — with room left over. He described it as "the size I stop noticing I'm wearing," which is about the highest praise a commuter can give. The tradeoff: at 5'6", the 20L sits noticeably lower on his back and the boxy shape looks less proportionate than the 16L.
The Mini (our third-grader, the toughest critic): She stuffed in a folder, a library book, a water bottle, and roughly 40 crayons. Loved it. Refused to take it off. If you're buying for a kid under 4'6" or want a purse-adjacent day pack, the 7L Mini is genuinely great — and it's often discounted hardest since it's less in demand than the classics.
Don't Pay Full Price for Extra Liters
Here's the part we care about most: the 20L almost never needs to be bought at retail. The 16L in classic colors (ox red, forest green, black) drops to $60–$70 multiple times a year at REI, Backcountry, and Fjällräven's own outlet section. The 20L routinely hits $75–$85 during back-to-school and Black Friday windows.
A few rules we've learned from tracking these prices:
- Navy and black rarely go on deep sale. Seasonal colors (Acorn, Fog, Peach Pink) get discounted first and deepest.
- The 16L is the volume seller, so it's the one that gets price-matched most aggressively. Check Amazon and REI against each other before checkout.
- Skip the Superbreak if you carry anything rectangular. It's cheaper, but the shape fights you constantly.
The Bottom Line
If your daily carry is a laptop under 13 inches, a notebook or two, and a water bottle, the 16L is your bag — and it's the cheapest entry into a genuine Kånken. If you're hauling a 15" machine, gym gear, or groceries on the walk home, the 20L earns its extra liters and its extra ten-ish dollars on sale. And if you're buying for a kid, don't overthink it: Mini, favorite color, done.
Buy the size that fits your Tuesday, not your imaginary hiking trip. That's how you avoid overpaying for capacity you'll never zip shut.
