KS Ultralight KS27 vs. Osprey Transporter Carryon 44
Two carry-on travel backpacks, compared spec for spec.
KS Ultralight KS27
| Capacity | 27 L |
| Weight | 0.3 kg |
| Dimensions | 55×28×16 cm |
| Airline fit | 87% |
| Price | $130 |
Feature by feature
| KS Ultralight KS27 | Feature | Osprey Transporter Carryon 44 |
|---|---|---|
| Storage | ||
| 2 | Compression | 2 |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | Y |
| removable | Sternum Strap | removable |
| Inside | ||
| N | Laptop | N |
| 2 | Main Compartments | 6 |
| N | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |
| Material | |
| X-pac VX 07 YKK "waterproof zip" | Recycled 100-denier x 210-denier high-tenacity nylon |
Osprey Transporter Carryon 44
| Capacity | 22 L |
| Weight | 0.9 kg |
| Dimensions | 43×25×23 cm |
| Airline fit | 75% |
| Price | $160 |
Key differences between the KS Ultralight KS27 and Osprey Transporter Carryon 44
- Hip belt: Removable on the KS Ultralight KS27; Yes on the Osprey Transporter Carryon 44.
- Main compartments: 2 on the KS Ultralight KS27; 6 on the Osprey Transporter Carryon 44.
- Built-in organizer: No on the KS Ultralight KS27; Yes on the Osprey Transporter Carryon 44.
Both have: compression straps, passport pocket, backpack straps, sternum strap, water bottle pockets, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 130 accept both. 34 accept only the KS Ultralight KS27, and 11 accept only the Osprey Transporter Carryon 44.
Only the KS Ultralight KS27 fits
Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.
Only the Osprey Transporter Carryon 44 fits
Etihad Airways, Gulf Air, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Scoot, Tiger Airways, Virgin Australia, WestJet.
KS Ultralight KS27 vs. Osprey Transporter Carryon 44: which should you pack?
The KS Ultralight KS27 carries 5L more than the Osprey Transporter Carryon 44 (27L vs. 22L), while the KS Ultralight KS27 is the lighter pack at 0.3kg (vs. 0.9kg). For carry-on flexibility, the KS Ultralight KS27 fits 87% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the KS Ultralight KS27; if you want to travel lighter, the KS Ultralight KS27 is the better call.