The published numbers
- Capacity. Fairview 40L, Allpa 35L.
- Dimensions.Fairview 21.3 x 13.8 x 9 in — under the standard box on height and width, level on depth. Allpa 22 x 12 x 10 in — two inches inside on width, level on height, one inch over on depth.
- Empty weight. Fairview 3.2 lb, Allpa 2.94 lb. A quarter of a pound apart, which is nothing; both are about a fifth of a 7 kg cabin allowance before you pack.
- Laptop.Both publish a 15 in sleeve, the Allpa’s fleece-lined. Neither is a published fit for a 16-inch machine; if that is your laptop, see best travel backpacks for a 17-inch laptop.
- Warranty.Osprey’s All Mighty Guarantee, an any-product, any-era free repair, against Cotopaxi’s Guaranteed for Good, which covers manufacturing defects for the lifetime of the product. Both are reasons these bags hold value.
The dimension result is the headline
Nearly every 40L travel pack is over the 22 x 14 x 9 in box somewhere — the Farpoint 40 publishes 21 x 15 x 10 in, the Cotopaxi Allpa 42L publishes 22 x 14 x 11 in — because 40 liters has to go somewhere and width and depth are where it goes. The Fairview is the exception: 21.3 x 13.8 x 9 in is inside the box on every side. Same capacity as the Farpoint, 1.2 inches narrower and an inch shallower, because the women’s-fit pack is built on a shorter, slimmer frame.
That is a genuine buying reason that has nothing to do with gender marketing. If you fly carriers that measure — and the European budget airlines do, with Ryanair’s priority cabin bag at 55 x 40 x 20 cm and easyJet’s large cabin bag at 56 x 45 x 25 cm — the Fairview is the 40L pack you can put in a frame with a straight face. The Allpa 35L has more width margin but is an inch deeper than the limit, so a hard-packed Allpa is a compression bet rather than a compliant bag. Work it through yourself with is a 40L backpack a carry-on and the carry-on size guide.
Fit beats features, and fit is not a label
“Women’s” on an Osprey means shorter back length and narrower, contoured straps. That helps a shorter torso and is actively wrong for a long one, which is why we sort the field by the measurement rather than the marketing in best women’s carry-on backpacks by torso size. Measure your torso first — travel backpack torso fitexplains how in two minutes with a tape measure — and buy whichever harness matches it, even if that turns out to be the Farpoint.
The Allpa 35L sidesteps the fit question instead of answering it: Cotopaxi publishes tuck-away shoulder straps and a hip belt on the Allpa line, but it is one unisex harness, not a fit range. For a 35L bag packed sensibly that is usually fine. For 40 liters of winter clothes it is the Fairview’s advantage, and the gap widens the further you walk. If you want the Farpoint-versus-Fairview version of the fit argument, Osprey Farpoint vs Fairview is that page, and Farpoint 40 vs Allpa 35L is the same matchup on the standard-fit harness.
Inside the bag
The Allpa wins this part cleanly. Its main compartment is split by zip mesh dividers, so the organization is structural: clean on one side, worn on the other, everything visible, nothing to buy separately. The shell is 100% recycled 840D TPU-coated nylon with ballistic ripstop panels, which is heavier fabric than the Fairview’s nylon ripstop and shrugs off weather better.
The Fairview is a plain clamshell: it opens flat like a suitcase and leaves the organizing to you. That is not a flaw so much as a different philosophy, and it is the reason packing cubes exist — a six-piece set turns the Fairview into the Allpa’s interior for very little money, which is the argument in are packing cubes worth it and the picks on best packing cubes for a carry-on.
Who should buy which
Buy the Fairview 40 if standard packs do not fit your frame, you want 40 liters that passes a sizer on paper, you walk with your bag, or you want a hip belt that genuinely transfers load. Our Osprey Fairview 40 review is the full write-up, and best women’s carry-on backpacks is the wider field.
Buy the Allpa 35L if you want the inside of the bag sorted without buying cubes, you prefer a narrower pack on a narrow sizer, you want the toughest shell of the two, or 35 liters is honestly enough for your trips. Our Cotopaxi Allpa 35L review covers the 10-inch depth question in full, and best 35L travel backpacks is the capacity class around it.
Buy the BAGSMART 35L if the budget is fixed.It publishes its dimensions, which almost nothing else at that price does, and they are 18.11 x 12.22 x 9.44 in — inside the box on height and width by a wide margin, 0.44 in over on depth. It takes a 17.3-inch laptop, has a sealed wet pocket, and includes a detachable front pouch that becomes a crossbody. What you should not believe is its personal-item claim: at 9.44 in deep it is over the 8 in American, Spirit and Frontier publish for a personal item. Buy it as a carry-on.
What we are not claiming
No hands-on testing, no durability ranking and no invented figures. Published spec read against published airline policy settles fit, capacity, weight and warranty — which is most of what separates these two — and says nothing about how either shell looks after three years of belt systems. Our method is in how we choose.